Download 11 - HandLab

SELF-STUDY QUESTIONS
Sunday, April 30, 2017
1. How many muscles contribute to the movement of the finger?
A. Five
B. Six
C. Eight
D. Four
2. The entire mechanism of the blended tendinous fibers on the dorsum of the finger is called:
A. The conjoined lateral bands
B. The dorsal apparatus
C. The triangular ligament
D. The extensor tendon complex
3. Which term does not describe the entire mechanism of the blended tendinous fibers on the
dorsum of the finger?
A. Dorsal aponeurosis or dorsal apparatus
B. Dorsal expansion, hood or mechanism
C. Extensor & flexor aponeurosis or apparatus
D. Or extensor expansion, hood or mechanism.
4. Choose the statement which does not describe the saggital bands:
A. Attached to the extensor digitorum communis tendon dorsally
B. Encircles the metacarpophalangeal joint capsule
C. Inserts into the volar plate of the metacarpophalangeal joint
D. Originates from the volar plate of the intermetacarpal ligament
5. In this presentation the central slip insertion refers specifically to:
A. The central fibers within the dorsal apparatus that are a continuation of the extensor
digitorum communis
B. The insertion of the central fibers just distal to the PIP joint
C. The insertion of the extensor digitorum communis at the dorsal base of the proximal phalanx
D. The insertion of the dorsal apparatus into the dorsal base of the distal phalanx
6. The distal most insertion of the dorsal apparatus is called the:
A. Terminal extensor insertion
B. Terminal tendon insertion
C. Dorsal extensor insertion
D. Dorsal apparatus distal insertion
7. The transverse fibers of the dorsal apparatus are:
A. The fibers that encircle the PIP joint
B. The distal most fibers of the dorsal apparatus
C. The fibers that insert into the central slip
D. The proximal most fibers of the dorsal apparatus
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8. The oblique fibers of the dorsal apparatus:
A. Insert as part of the central slip insertion
B. Originate at the PIP joint and insert with the terminal tendon insertion
C. Connect the lateral band to the transverse fibers
D. Insert into the proximal base of the proximal phalanx
9. The lateral bands can be defined as:
A. The thickened edges of the dorsal apparatus
B. Distinctly separate lateral tendons
C. A connection between the extensor digitorum communis and the interosseus muscles
D. The most dorsal part of the dorsal apparatus
10. The transverse retinacular ligament is:
A. A group of fibers arising from the volar plate of the PIP joint which stabilize the central slip
insertion
B. A group of fibers arising from the volar plate of the MP joint which stabilize the central slip
C. A group of fibers arising from the volar plate of the MP joint which stabilize the oblique
fibers
D. A group of fibers arising from the volar plate of the PIP joint which stabilize the lateral
bands
11. The triangular ligament:
A. Is a thin sheet of fibers over the distal part of the dorsum of the middle phalanx
B. Connects the oblique fibers with the lateral bands
C. Connects the two lateral bands over the distal part of the dorsum of the middle phalanx
D. A and C
12. The oblique retinacular ligament is often called:
E. Landsmeer’s ligament
F. The ORL
G. Smith’s ligament
H. A and B
13. The sagittal bands are:
A. Transverse tendinous fibers attached to the extensor digitorum communis tendon which
encircles the PIP joint capsule and inserts into the volar plate of the MP joint.
B. Transverse tendinous fibers attached to the extensor digitorum communis tendon which
encircles the MP joint capsule and inserts into the volar plate of the MP joint.
C. Transverse tendinous fibers attached to the extensor digitorum communis tendon which
encircles the MP joint capsule and inserts into the volar plate of the PIP joint.
D. Transverse tendinous fibers attached to the extensor digiti minimi tendon which encircles the
PIP joint capsule and inserts into the volar plate of the MP joint.
14. The continuing fibers of extensor digitorum communis tendon which run longitudinally along the
dorsum of the proximal phalanx are called:
A. The central slip insertion
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B. The central slip
C. The dorsal slip
D. The dorsal slip insertion
15. The conjoined lateral bands are:
A. A group of fibers that connect medially to each of the lateral bands and laterally from the
lateral bands to the central slip
B. A group of fibers that connect the lateral bands to the dorsal apparatus
C. A group of fibers that connect laterally to each of the lateral bands and medially from
the lateral bands to the central slip
D. A group of fibers that connect laterally to each central slip
16. The three important retaining structures of the dorsal apparatus are:
A. The transverse retinacular ligament, the oblique retinacular ligament and the transverse
ligament
B. The transverse retinacular ligament, the oblique retinacular ligament and the
triangular ligament
C. The transverse retinacular ligament, the oblique retinacular ligament and the oblique
ligament
D. None of the above
17. The oblique retinacular ligament runs:
A. From the volar plate of the MP joint and the flexor sheath to insert with the central slip
insertion into the dorsal base of the middle phalanx
B. From the volar plate of the PIP joint and the flexor sheath to insert with the central slip
insertion into the dorsal base of the middle phalanx
C. From the volar plate of the PIP joint and the flexor sheath to insert with the terminal
tendon insertion into the dorsal base of the distal phalanx
D. From the volar plate of the MP joint and the flexor sheath to insert with the terminal tendon
insertion into the dorsal base of the distal phalanx
18. The saggital bands:
A. Are attached to the EDC tendon, encircle the joint, and connect with the volar plate;
thus completing a full circle around the MP joint
B. Are attached to the central slip, encircle the joint, and connect with the volar plate; thus
completing a full circle around the PIP joint
C. Are attached to the lateral bands, partially encircle the joint, and connect with the volar plate;
thus completing a partial circle around the PIP joint
D. Are attached to the EDC tendon, partially the joint, and connect with the volar plate; thus
completing a partial circle around the MP joint
19. The sagittal band fibers are:
A. Proximal to the transverse fibers of the dorsal apparatus
B. Distal to the transverse fibers of the dorsal apparatus
C. Volar to the transverse fibers of the dorsal apparatus
D. Distal to the oblique fibers of the dorsal apparatus
20. The term “central slip” should refer to:
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A. The entire span of the lateral longitudinal fibers that are a continuation of the lateral bands
within the dorsal apparatus
B. The central span of the longitudinal fibers that are a continuation of the lumbrical tendon
within the dorsal apparatus
C. The entire span of the central longitudinal fibers that are a continuation of the EDC
tendon within the dorsal apparatus
D. The entire span of the lateral longitudinal fibers that are a continuation of the EDC tendon
within the dorsal apparatus
21. The term “central slip insertion” precisely describes:
A. The tendinous insertion of the central slip fibers distal to the PIP joint
B. The bony insertion of the central slip fibers distal to the PIP joint
C. The bony insertion of the central slip fibers distal to the MP joint
D. The bony insertion of the central slip fibers distal to the DIP joint
22. The central slip insertion receives the:
A. Fibers of the central slip, the lateral band, and the triangular ligament
B. Fibers of the central slip blended with the oblique fibers
C. Fibers of both of the conjoined lateral bands
D. Fibers of the lateral bands only
23. Which fibers receive the insertions of the interosseous muscles?
A. The transverse fibers
B. The oblique fibers
C. Both the transverse and oblique fibers
D. None of the above
24. The term “lateral band” describes
A. A distinct tendon structure
B. The thickened lateral edges of the dorsal apparatus
C. The cross-over fibers on the dorsum of the proximal phalanx
D. A and C
25. The lateral bands of the dorsal apparatus:
A. Lie dorsal to the PIP joint axis but never fully central on the dorsum of the PIP joint
B. Lie volar to the MP joint and PIP joint axis
C. Lie fully central on the dorsum of the PIP joint when the PIP joint is fully extended
D. Lie dorsal to the MP joint and PIP joint axis
26. Distally the lateral bands blend with:
A. The transverse fibers
B. The oblique fibers
C. The terminal tendon insertion
D. The transverse retinacular ligament
27. The Lumbrical muscle:
A. Inserts via a distinct linear insertion in the radial lateral band
B. Inserts via a broad flat insertion in the radial lateral band
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C. Inserts via a distinct linear insertion in the ulnar lateral band
D. Inserts via a broad flat insertion in the ulnar lateral band
28. The cross-over fibers of the dorsal apparatus are called:
A. The conjoined lumbrical bands
B. The cross-over fiberous bands
C. The conjoined lateral bands
D. The interosseous crossing fibers
29. The conjoined lateral bands are:
A. Groups of thickened fibers always distinguishable as distinct entities on the cadaver
B. Distinct tendons connecting the lateral bands to all other structures
C. A portion of the dorsal apparatus that connects the transverse and oblique fibers
D. Groups of thickened fibers not always distinguishable as distinct entities on the cadaver
30. The transverse retinacular ligament:
A. Is a nearly transparent fibrous sheet originating from the flexor tendon sheath/PIP
joint capsule
B. Attaches to the lateral bands to stabilize them
C. Is an opaque fibrous sheet originating from the flexor tendon sheath/PIP joint capsule and
inserting with the terminal tendon insertion
D. Attaches to the central slip to stabilize it
31. Triangular ligament connects:
A. Tendon to tendon
B. Tendon to bone
C. Bone to bone
D. Ligament to tendon
32. The oblique retinacular ligament:
A. Connects tendon to bone
B. Is an active structure that can influence digital motion
C. Connects tendon to tendon
D. Is a non-active structure that can influence digital motion
33. The oblique retinacular ligament inserts:
A. Together with the lateral bands fibers at the central slip insertion
B. Together with the central slip fibers at the terminal tendon insertion
C. Together with the conjoined lateral bands at the terminal tendon insertion
D. Together with the lateral bands fibers at the terminal tendon insertion
34. The central slip is the continuation of:
A. The transverse fibers
B. The oblique fibers
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C. The extensor digitorum communis tendon fibers
D. The interosseous fibers
35. The termination of the central slip fibers is:
A. The insertion into the radial lateral band
B. The central slip insertion at the proximal base of the proximal phalanx
C. The central slip insertion
D. The terminal tendon insertion
36. The terminal tendon inserts into:
A. The dorsal base of the middle phalanx
B. The volar base of the middle phalanx
C. The volar base of the distal phalanx
D. The dorsal base of the distal phalanx
37. The lateral bands are interconnected to other parts of the dorsal apparatus via:
A. The cross-over fibers just distal to the PIP joint
B. The transverse fibers just distal to the PIP joint
C. The cross-over fibers just proximal to the PIP joint
D. The Oblique retinacular ligament just proximal to the PIP joint
38. One can consider the function of the extensor digitorum communis to be like one muscle with
four tendons
A. True
B. False
39. All extrinsic finger extensor tendons cross the wrist together within which compartment of the
dorsal retinaculum?
A. 3rd
B. 4th
C. 5th
D. 6th
40. The extensor digiti quinti travels alone in which compartment of the dorsal retinaculum:
A. 3rd
B. 4th
C. 5th
D. 6th
41. The fibrous slings that connect the extensor digitorum tendons on the dorsum of the hand are
called:
A. Junctura fibrous tendinea
B. Junctura of the accessory extensors
C. Junctura tendinea
D. Junctura longus
42. The extensor digiti quinti tendon to the little finger lies:
A. On the ulnar side of the extensor digitorum communis tendon
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B. On the radial side of the extensor digitorum communis tendon
C. On either side of the extensor digitorum communis tendon
D. On both the ulnar and radial side of the extensor digitorum communis tendon
43. How many insertions are there of the extensor digitorum communis muscle on the finger?
A. Two
B. Three
C. Four
D. Five
44. Choose the correct statement:
A. The primary insertion of the extensor digitorum communis tendon at the MP joint is an
typical bony insertion
B. The primary insertion of the extensor digitorum communis tendon at the MP joint is a
blending with the fibers of the lumbrical and interosseous muscles
C. The primary insertion of the extensor digitorum communis tendon at the MP joint is an
atypical non-bony insertion
D. The primary insertion of the extensor digitorum communis tendon is a non-variable insertion
just distal to the MP joint into the dorsal base of the proximal phalanx
45. The encircling nature of the saggital bands provides
A. Connection to the oblique fibers at the MP joint
B. Stability at the PIP joint
C. Stability at the MP joint
D. Connection to the transverse retinacular ligament
46. The muscle/s that can extend the MP joint of the finger is/are:
A. The extensor digitorum communis muscle
B. The extensor digitorum communis and the lumbrical muscles
C. The extensor digitorum communis and the interosseous muscles
D. The extensor digitorum communis, the lumbrical and the interosseous muscles
47. The glide of the extensor digitorum communis tendon distally or proximally at the MP joint is
limited by the tethering effect of:
A. The encircling fibers of the transverse retinacular ligament
B. The fibers of the oblique retinacular ligament
C. The encircling fibers of the sagittal bands
D. A and B
48. The extensor digitorum communis may insert via a small tendinous insertion just distal to the
MP joint
A. True
B. False
49. The extensor digitorum communis muscle:
A. Has a direct path to the terminal tendon insertion
B. Has both a direct path and indirect path to the terminal tendon insertion
C. Has no direct path to the terminal tendon insertion
D. Combines with the lumbrical to have an in direct path to the terminal tendon insertion
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50. The terminal tendon insertion of the dorsal apparatus represent the insertion/s of what muscle/s:
A. Extensor digitorum communis muscle
B. Extensor digitorum communis and the lumbrical and interosseous muscles
C. Extensor digitorum communis and lumbrical muscles
D. Extensor digitorum communis and interosseous muscles
51. The extensor digitorum communis muscles:
A. Have incomplete muscle belly separation
B. Have complete muscle belly separation
C. Are innervated by the median nerve
D. Are not in any way connected to the extensor indicis and extensor digiti quinti
52. The extensor digitorum communis muscle insertions are:
A. MP joint via bony insertion distal to the MP joint, central slip bony insertion distal to the PIP
joint and the terminal tendon bony insertion
B. Variable bony insertion distal to the MP joint, central slip bony insertion distal to the PIP
joint and the terminal tendon bony insertion
C. MP joint via the sagittal bands, variable bony insertion distal to the MP joint, central
slip bony insertion distal to the PIP joint and the terminal tendon bony insertion
D. PIP joint via the sagittal bands, variable bony insertion distal to the PIP joint, central slip
bony insertion distal to the PIP joint and the terminal tendon bony insertion
53. The extensor digitorum communis is tethered at the MP joint by:
A. The sagittal band insertion into the volar plate
B. The sagittal band insertion into the lateral bands
C. The sagittal band insertion into collateral ligaments
D. The sagittal band insertion into dorsal retinaculum
54. When viewing the denuded cadaver hand from the dorsum, one can see:
A. Only the dorsal interosseous muscles
B. All dorsal and volar interosseous muscles
C. Only half of the volar interosseous muscles
D. All of the lumbrical muscles
55. Choose the correct statement:
A. There are three dorsal interosseous muscles and four volar interosseous muscles
B. There are four dorsal interosseous muscles and four volar interosseous muscles
C. There are four dorsal interosseous muscles and three volar interosseous muscles
D. There are three dorsal interosseous muscles and three volar interosseous muscles
56. Choose the correct answer:
A. All interosseous muscles lie within a closed fascial compartment
B. All interosseous muscles and all lumbrical muscles lie within a closed fascial compartment
C. Only the dorsal interosseous muscles lie within a closed fascial compartment
D. All interosseous muscles and all lumbrical muscles lie outside a closed fascial compartment
57. The interosseous tendons cross the metacarpophalangeal joint:
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A.
B.
C.
D.
Dorsal to the intermetacarpal ligament
Volar to the intermetacarpal ligament
Above and below the intermetacarpal ligament
None of the above
58. Choose the correct statement:
A. Interosseous muscle insertions are volar to the axis of rotation of the MP joint but
dorsal to the intermetacarpal ligament
B. Interosseous muscle insertions are dorsal to the axis of rotation of the MP joint and dorsal to
the intermetacarpal ligament
C. Interosseous muscle insertions are volar to the axis of rotation of the MP joint and volar to
the intermetacarpal ligament
D. Interosseous muscle insertions are volar to the axis of rotation of the MP joint and end at the
intermetacarpal ligament
59. Choose the correct statement:
A. The dorsal interosseous muscles adduct the finger and the volar interosseous muscles adduct
the fingers
B. The dorsal interosseous muscles abduct the finger and the volar interosseous muscles abduct
the fingers
C. The dorsal interosseous muscles adduct the finger and the volar interosseous muscles abduct
the fingers
D. The dorsal interosseous muscles abduct the finger and the volar interosseous muscles
adduct the fingers
60. The two bellies of the dorsal interosseous muscles are:
A. Called the volar belly and the dorsal belly
B. Both called the volar bellies
C. Both called the dorsal bellies
D. Called the large and small bellies
61. Innervation of the dorsal and volar bellies of dorsal interosseous muscles is usually supplied by
the:
A. Ulnar nerve
B. Median nerve
C. Radial nerve
D. Both Median and ulnar nerve
62. The dorsal interosseous muscles arise from:
A. The contiguous sides of the metacarpals
B. The flexor digitorum profundus tendons
C. The volar aspect of the metacarpals
D. The flexor digitorum superficialis tendons
63. The unique first dorsal interosseous muscle
A. Has two bellies
B. Has one large belly
C. Originates from the thumb metacarpal and the index finger metacarpal
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D. A and C
64. The tendons of the volar bellies of the dorsal interosseous muscles usually insert:
A. Into the dorsal apparatus
B. Into the bony tubercle at the base of the middle phalanx
C. Into the lateral bands
D. Into the bony tubercle at the base of the proximal phalanx
65. The tendon from the dorsal belly of the dorsal interosseous muscle usually inserts:
A. Into the dorsal apparatus
B. Into the bony tubercle at the base of the middle phalanx
C. Into the lateral bands
D. Into the bony tubercle at the base of the proximal phalanx
66. The tendon of the volar belly of the dorsal interosseous muscle usually:
A. Crosses under that of the dorsal belly and it inserts more dorsally than the insertion of the
dorsal belly
B. Crosses over that of the dorsal belly and it inserts more volarly than the insertion of the
dorsal belly
C. Crosses over that of the dorsal belly and it inserts more dorsally than the insertion of
the dorsal belly
D. None of the above
67. The majority of the volar bellies of the dorsal interosseous muscles usually have:
A. An insertion into the bony tubercle at the base of the proximal phalanx
B. An insertion into the dorsal apparatus
C. An insertion into the bony tubercle at the base of the middle phalanx
D. None of the above
68. The abductor digiti quinti:
A. Provides the same function as dorsal bellies of the dorsal interosseous muscles
B. Provides the same function as volar bellies of the dorsal interosseous muscles
C. Provides the same function as volar interosseous muscles
D. Provides the same function as all of the interosseous muscles
69. Choose the correct statement/s about the first dorsal interosseous muscle:
A. Is distinctly unique from the other dorsal interosseous muscles
B. Usually has a primary bony insertion
C. Has a bi-pennate origin
D. All of the above
70. How many dorsal interosseus muscles that insert onto the little finger:
A. One
B. Two
C. Three
D. None
71. Which is an accurate description of the volar interosseous muscles:
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A.
B.
C.
D.
All are usually unipennate
All are usually bipennate
All are significantly larger than the dorsal interosseous muscles
All are significantly smaller than the dorsal interosseous muscles
72. The middle finger:
A. Does not usually have any interosseous muscle insertions into the dorsal apparatus
B. Does not usually have any volar or dorsal interosseous muscle insertions
C. Does not usually have any volar interosseous muscle insertions
D. Does not usually have any dorsal interosseous muscle insertions
73. All of the volar interosseous muscles usually insert:
A. Into the dorsal apparatus
B. Into the bony tubercle of the base of the proximal phalanx
C. Both the dorsal apparatus and the bony tubercle of the base of the proximal phalanx
D. None of the above
74. The tendons of the volar interosseous muscles run:
A. Volar to the intermetacarpal ligament and volar to the axis of rotation of the
metacarpophalangeal joint
B. Volar to the intermetacarpal ligament, but dorsal to the axis of rotation of the
metacarpophalangeal joint
C. Dorsal to the intermetacarpal ligament, and dorsal to the axis of rotation of the
metacarpophalangeal joint
D. Dorsal to the intermetacarpal ligament, but volar to the axis of rotation of the
metacarpophalangeal joint
75. Choose the correct statement:
A. The dorsal interosseous muscles are unipennate and the volar interosseous muscles are
unipennate
B. The dorsal interosseous muscles are bipennate and the volar interosseous muscles are
bipennate
C. The dorsal interosseous muscles are bipennate and the volar interosseous muscles are
unipennate
D. None of above
76. Choose the correct statement:
A. Usually the dorsal interosseous muscles have two insertions: one into base of the
proximal phalanx and one into the dorsal apparatus; All of the volar interosseous
muscles usually insert into the dorsal apparatus
B. Usually the volar interosseous muscles have two insertions: one into base of the proximal
phalanx and one into the dorsal apparatus; All of the dorsal interosseous muscles usually
insert into the dorsal apparatus
C. Usually the volar interosseous muscles have two insertions: one into base of the proximal
phalanx and one into the dorsal apparatus
D. Usually all of the dorsal interosseous muscles insert into the dorsal apparatus
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77. All of the dorsal interosseous muscles and all of the volar interosseous muscles are innervated
by:
A. The ulnar nerve
B. The median nerve
C. The radial nerve
D. Both the median and ulnar nerves
78. The little finger:
A. Usually receives two dorsal interosseous muscle insertions and one volar interosseous muscle
insertion
B. Usually receives one dorsal interosseous muscles insertions and two volar interosseous
muscle insertions
C. Usually receives no dorsal interosseous muscle insertions and one volar interosseous
muscle insertion
D. None of the above
79. The four lumbrical muscles:
A. Lie within the palm, inside a fascial compartment with the interosseous muscles
B. Lie in the palm, outside of a fascial compartment
C. Lie dorsal to the interosseous muscles, outside of a fascial compartment
D. None of the above.
80. The lumbrical muscles arise from:
A. The FDP tendons and the FDS tendons
B. The FDP tendons
C. The FDS tendons
D. The contiguous sides of the metacarpals
81. The lumbrical muscles usually insert:
A. Into the radial aspect of the dorsal apparatus
B. Into the ulnar lateral band
C. Into the radial lateral band
D. A and C
82. Choose the correct statement:
A. The two ulnar lumbrical muscles are usually unipennate and the two radial muscles are
usually bipennate
B. All lumbrical muscles are usually unipennate
C. The two radial lumbrical muscles are usually unipennate and the two ulnar muscles are
usually bipennate
D. All lumbrical muscles are usually bipennate
83. The lumbrical muscle:
A. Crosses the MP joint dorsal the joint axis and volar to the intermetacarpal ligament
B. Crosses the MP joint volar the joint axis and dorsal to the intermetacarpal ligament
C. Crosses the MP joint volar the joint axis and volar to the intermetacarpal ligament
D. Crosses the MP joint dorsal the joint axis and dorsal to the intermetacarpal ligament
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84. The lumbrical tendon insertion is:
A. More proximal and more volar than the interosseous muscle insertions
B. More distal and more dorsal than the interosseous muscle insertions
C. More proximal and more dorsal than the interosseous muscle insertions
D. More distal and more volar than the interosseous muscle insertions
85. The usual innervation of the lumbrical muscles is:
A. Median nerve innervates the radial half and ulnar nerve innervates the ulnar half
B. Median nerve innervates the ulnar half and ulnar nerve innervates the radial half
C. Ulnar nerve innervates the radial half and radial nerve innervates the ulnar half
D. Median nerve innervates all
86. The lumbrical muscles are:
A. Slender, short-fibered muscles which have an extraordinary ability to lengthen
B. Slender, long-fibered muscles which have a very limited ability to lengthen
C. Slender, long-fibered muscles which have an extraordinary ability to lengthen
D. Slender, short-fibered muscles which have a very limited ability to lengthen
87. Choose the correct statement:
A. The interosseous muscles arise from the metacarpal bones and the lumbrical muscles arise
from the FDP tendons
B. The lumbrical muscles arise from the metacarpal bones and the interosseous muscles arise
from the FDP tendons
C. Both the interosseous muscles and the lumbrical muscles arise from the FDP tendons
D. Both the interosseous muscles and the lumbrical muscles arise from the metacarpal bones
88. Choose the correct statement:
A. All of the interosseous muscles insert into the dorsal apparatus and all of the lumbrical
muscles insert into the lateral band of the dorsal apparatus
B. Most of the interosseous muscles insert into a bony tubercle on the proximal phalanx but
some interosseous muscles insert into the dorsal apparatus; all of the lumbrical muscles insert
into the lateral band of the dorsal apparatus
C. Most of the interosseous muscles insert into the dorsal apparatus but some interosseous
muscles insert into a bony tubercle on the proximal phalanx; all of the lumbrical muscles
insert into a bony tubercle on the proximal phalanx
D. Most of the interosseous muscles insert into the dorsal apparatus but some interosseous
muscles insert into a bony tubercle on the proximal phalanx; all of the lumbrical
muscles insert into the lateral band of the dorsal apparatus
89. The character of the interosseous muscle insertion into the dorsal apparatus is:
A. A narrow, tubular and long insertion into the lateral band
B. A broad, flat, and expansive insertion into multiple fibers
C. A broad, raised, but limited insertion into the transverse fibers
D. None of the above
90. The lumbrical muscles insert:
A. Via a linear tendon into the lateral band fibers
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B. Via a broad, flat tendon into the lateral band and transverse fibers
C. Via a linear tendon into the oblique fibers
D. None of the above
91. Choose the correct statement:
A. The interosseous muscles approach their insertion at about a 10/15 degree angle while the
lumbrical muscle inserts at about a 30/35 degree angle
B. The interosseous muscles approach their insertion at about a 20/25 degree angle while
the lumbrical muscle inserts at about a 30/35 degree angle
C. The interosseous muscles approach their insertion at about a 10/15 degree angle while the
lumbrical muscle inserts at about a 15/20 degree angle
D. The interosseous muscles approach their insertion at about a 40/45 degree angle while the
lumbrical muscle inserts at about a 30/35 degree angle
92. Choose the correct statement:
A. The lumbrical muscles are smaller, thinner, and longer than the interosseous muscles.
B. All of the interosseous muscles are usually innervated by the ulnar nerve
C. The interosseous muscles are usually innervated by the median and ulnar nerves
D. A and B
93. The hypothenar muscles are:
A. The abductor digiti minimi, the flexor digiti minimi, and the opponens digit minimi
B. The 3rd volar interosseous, the flexor digiti minimi, and the opponens digit minimi
C. The abductor digiti minimi, and the opponens digit minimi
D. The flexor digiti minimi, and the opponens digit minimi
94. The abductor digiti minimi is an antagonist to:
A. The 3rd dorsal interosseous muscle
B. The 4rd volar interosseous muscle
C. The 3rd volar interosseous muscle
D. The 4th dorsal interosseous muscle
95. The abductor digiti minimi is:
A. Deep to the flexor digiti minimi and the opponens digiti minimi
B. Superficial to the flexor digiti minimi and deep to the opponens digiti minimi
C. Superficial to the flexor digiti minimi and the opponens digiti minimi
D. Deep to the flexor digiti minimi and superficial to the opponens digiti minimi
96. The opponens digiti minimi:
A. Is on the palmar surface of the hand
B. Has an oblique path which provides rotation of the 5th metacarpal
C. Is parallel to the abductor digiti minimi
D. A & B
97. How many intrinsic muscles usually influence motion of the little finger?
A. Three
B. Four
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C. Five
D. Six
98. Choose the correct statement:
A. The extrinsic finger extensor muscles pass underneath multiple external pulleys but have few
restrictions to free glide
B. The extrinsic finger flexor muscles pass underneath multiple external pulleys but have
few restrictions to free glide
C. The extrinsic finger flexor muscles pass underneath multiple external pulleys and have three
anatomical restrictions to free glide
D. None of the above
99. The flexor digitorum profundus muscles originate from:
A. The proximal radius, the interosseous membrane and the deep antebrachial fascia
B. The proximal ulna, the distal radius and the superficial antebrachial fascia
C. The proximal ulna, the interosseous membrane and the deep antebrachial fascia
D. None of the above
100.
A.
B.
C.
D.
The flexor digitorum superficialis muscle origin is:
More extensive than the flexor digitorum profundus muscles
Less extensive than the flexor digitorum profundus muscles
The same as the flexor digitorum profundus muscles
None of the above
101.
A.
B.
C.
D.
The flexor digitorum profundus muscles are usually innervated by the:
Ulnar Nerve
Median nerve
Ulnar and median nerves
Ulnar and radial nerves
102.
A.
B.
C.
D.
The flexor digitorum superficialis muscles are usually innervated by the:
Ulnar Nerve
Median nerve
Ulnar and median nerves
Ulnar and radial nerves
103.
Choose the correct statement:
A. The flexor digitorum superficialis muscle influences motion at four joints and the flexor
digitorum profundus muscle influences motion at four joints
B. The flexor digitorum superficialis muscle influences motion at three joints and the flexor
digitorum profundus muscle influences motion at three joints
C. The flexor digitorum superficialis muscle influences motion at four joints and the flexor
digitorum profundus muscle influences motion at three joints
D. The flexor digitorum superficialis muscle influences motion at three joints and the
flexor digitorum profundus muscle influences motion at four joints
104.
The transverse carpal ligament:
A. Keeps the extrinsic flexor tendons close to the axis of the wrist
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B. Keeps the extrinsic extensor tendons close to the axis of the wrist
C. Keeps the extrinsic and intrinsic flexor tendons close to the axis of the wrist
D. None of the above
105.
Choose the correct statement:
A. The transverse (or annular pulleys) and the cruciate (or oblique) pulleys lie close to the joints
B. The transverse (or annular pulleys) lie close to the joints and the cruciate (or oblique) pulleys
over the shafts of the bones
C. The transverse (or annular pulleys) lie over the shafts of the bones and the cruciate (or
oblique) pulleys lie close to the joints
D. None of the above
106.
The extrinsic flexor system:
A. Has less powerful muscles and less efficient mechanics than the intrinsic extensor surface
B. Has more powerful muscles and more efficient mechanics than the combined extrinsic
and intrinsic extensor surface
C. Has less powerful muscles but more efficient mechanics than the extrinsic extensor surface
D. None of the above
107.
A.
B.
C.
D.
The flexor digitorum superficialis muscles:
Can initiate isolated flexion
Can initiate isolated flexion only if the profundus is also active
Can initiate isolated flexion only if the lumbrical is also active
Cannot initiate isolated flexion
108.
A.
B.
C.
D.
Free glide of the extrinsic flexor digitorum profundus tendons is limited by:
The saggital band fibers
The ulnar bi-pennate lumbrical muscles
The flexor digitorum profundus tendons
None of the above
109.
A.
B.
C.
D.
Choose the correct statement/s:
The lumbrical has the longest muscle fiber length of the intrinsic finger muscles
The lumbrical is the weakest muscle of the five intrinsic and extrinsic finger muscles
The lumbrical has the shortest muscle fiber length of the intrinsic finger muscles
A and B
110.
A.
B.
C.
D.
The lumbrical muscle fiber length is:
3.5 times that of the interosseous muscles
.5 that of the interosseous muscles
2 times that of the interosseous muscles
The same as that of the interosseous muscles
111.
A.
B.
C.
D.
Choose the correct statement:
The interosseous muscles are relatively strong in proportion to their muscle length
The interosseous muscles are relatively weak in proportion to their muscle length
The interosseous muscles are relatively weak in comparison to the lumbrical muscles
None of the above
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