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EMBRYOLOGY EXAM II
FORM A
JUNE 30, 2003
1.
The hyoid arch is the name often given to arch ____.
A.
one
B.
two
C.
three
D.
four
E.
six
2.
The glossopharyngeal nerve innervates derivatives of which pharyngeal arch?
A.
one
B.
two
C.
three
D.
four
E.
six
3.
Branches of the vagus nerve (CN X) innervate derivatives of arch ____.
A.
four
B.
six
C.
both
D.
neither
4.
Since the muscles of facial expression are innervated by cranial nerve VII, you know they are
derived from pharyngeal arch _____.
A.
one
B.
two
C.
three
D.
four
E.
six
5.
Since the digastric muscle is innervated by both the trigeminal nerve and the facial nerve, you
know that this muscle is derived from both the first and second pharyngeal arches.
A.
true
B.
false
6.
The parathyroid glands are derived from pharyngeal pouch:
A.
three
B.
four
C.
both
D.
neither
embryology exam II, form A, page 1, questions 1-6
7.
Pharyngeal pouch _____ contributes to the development of the palatine tonsil.
A.
one
B.
two
C.
three
D.
four
E.
five
8.
The thymus gland is derived from the dorsal wing of pharyngeal pouch four.
A.
true
B.
false
MATCH THE FOLLOWING WITH THE FIGURE AT THE RIGHT. ONE ANSWER PER
QUESTION. ANSWERS MAY BE USED MORE THAN ONCE.
9.
Becomes the external acoustic meatus
10.
Ultimobranchial body
11.
Innervated by the facial nerve
12.
Forms the eustacian tube
13.
Gives rise to the stapes
14.
Gives rise to the greater horn of the hyoid
15.
Gives rise to the constrictor muscles of the pharynx
16.
Gives rise to the mandible
17.
The oral part of the tongue is derived from the:
A.
tuberculum impar
B.
lateral lingual swellings
C.
copula
D.
A and B
E.
A, B, and C
18.
The root of the tongue is separated from the oral part of the tongue by the:
A.
hypobranchial eminence
B.
lingual septum
C.
median sulcus
D.
terminal sulcus
embryology exam II, form A, page 2, questions 7-18
19.
The muscles of the tongue are innervated by cranial nerve:
A.
V
B.
VII
C.
IX
D.
X
E.
XII
20.
The first endocrine gland to appear in the embryo is the:
A.
thymus
B.
parathyroid
C.
thyroid
D.
adrenal
21.
The opening from the mouth to the thyroid diverticulum is called the sulcus limitans.
A.
true
B.
false
22.
The pyramidal lobe of the thyroid gland:
A.
is the largest lobe of the gland.
B.
is necessary for the gland to function properly.
C.
is a remnant of the thyroglossal duct.
D.
A and B
E.
A, B and C
23.
The palatine shelves are derived from the:
A.
frontonasal prominence
B.
medial nasal prominence
C.
lateral nasal prominence
D.
mandibular prominence
E.
maxillary prominence
24.
The secondary palate is derived from the:
A.
palatine shelves
B.
intermaxillary segment
C.
both
D.
neither
25.
The landmark separating the primary and secondary palate is the:
A.
foramen cecum
B.
sulcus limitans
C.
incisive foramen
D.
lingual septum
26.
The medial and lateral nasal prominences develop from the frontonasal prominence.
A.
true
B.
false
embryology exam II, form A, page 3, questions 19-26
27.
The caudal boundary of the stomodeum is formed by the:
A.
frontonasal prominence
B.
medial nasal prominence
C.
lateral nasal prominence
D.
maxillary prominence
E.
mandibular prominence
28.
The philtrum of the upper lip is formed from the:
A.
frontonasal prominence
B.
medial nasal prominence
C.
lateral nasal prominence
D.
maxillary prominence
E.
mandibular prominence
29.
The nasal placodes appear on the frontonasal prominence.
A.
true
B.
false
30.
The alae of the nose are derived from the:
A.
frontonasal prominence
B.
medial nasal prominence
C.
lateral nasal prominence
D.
maxillary prominence
E.
mandibular prominence
31.
Anomalies associated with pharyngeal arch one include:
A.
Pierre Robin syndrome
B.
Treacher Collins syndrome
C.
both
D.
neither
32.
Children with DiGeorge syndrome have an underdeveloped thymus.
A.
true
B.
false
33.
Branchial cysts are normally found:
A.
in the midline near the hyoid bone
B.
along the anterior border of the sternocleidomastoid muscle.
C.
both
D.
neither
34.
Ankyloglossia is a condition associated with the:
A.
thyroid gland
B.
thymus gland
C.
secondary palate
D.
primary palate
E.
tongue
embryology exam II, form A, page 4, questions 27-34
35.
A cleft of the upper lip is always associated with a posterior cleft palate.
A.
true
B.
false
36.
The developing eyeball is derived from the forebrain.
A.
true
B.
false
37.
The lens of the eye is derived from the:
A.
forebrain
B.
surface ectoderm
C.
choroid
D.
sclera
38.
The pars ceca retinae gives rise to the:
A.
neural layer of the retina
B.
pigmented layer of the retina
C.
optic stalk
D.
iris
39.
The mesenchyme surrounding the developing eye develops into the:
A.
sclera
B.
choroid
C.
both
D.
neither
40.
Rubella infection during weeks 4-8 can result in damage to the:
A.
eye
B.
ear
C.
both
D.
neither
41.
The inner ear is derived from the:
A.
forebrain
B.
surface ectoderm
C.
hindbrain
D.
pharyngeal pouch one
42.
The eardrum develops between pharyngeal cleft one and pharyngeal pouch one.
A.
true
B.
false
43.
Bones of the middle ear are derived from arch:
A.
I
B.
II
C.
both
D.
neither
embryology exam II, form A, page 5, questions 35-43
MATCH THE FOLLOWING WITH THE FIGURE AT THE RIGHT. ONE ANSWER PER
QUESTION. ANSWERS MAY BE USED MORE THAN ONCE.
44.
membranous labyrinth
45.
external acoustic meatus
46.
meatal plug
47.
eustacian tube
48.
Extraembryonic membranes that regress by the end of the first trimester include:
A.
amnion and yolk sac.
B.
chorion and yolk sac
C.
amnion and chorion
D.
chorion and allantois
E.
yolk sac and allantois
49.
Contents of the mature umbilical cord include:
A.
two arteries and a vein
B.
intestinal loops
C.
allantois
D.
A and B
E.
A, B, and C
50.
Dizygotic twins do not share a common amnion.
A.
true
B.
false
END OF EXAM
embryology exam II, form A, page 6, questions 44-50