Download EMBRYOLOGY EXAM II

EMBRYOLOGY EXAM II
FORM A
MARCH 1, 2002
MATCH THE FOLLOWING. ONE ANSWER PER QUESTION. ANSWERS MAY BE USED
MORE THAN ONCE.
A.
arch I
B.
arch II
C.
1.
Meckel's cartilage
2.
thyroid cartilage
3.
greater horn of the hyoid bone
4.
Muscles of facial expression.
5.
Muscles of mastication
6.
Constrictor muscles of the pharynx
7.
Trigeminal nerve
8.
Lateral palatine processes (shelves)
9.
Pharyngeal arch I is innervated by CN VII
A.
true
B.
false
arch III
D.
arch IV
MATCH THE FOLLOWING. ONE ANSWER PER QUESTION. ANSWERS MAY BE USED
MORE THAN ONCE
A.
pouch 1
D.
pouch 4
B.
pouch 2
E.
none of the above
C.
pouch 3
10.
Parafollicular cells of the thyroid gland
11.
Epithelial crypts of the palatine tonsil
12.
Middle ear cavity
13.
Follicular cells of the thyroid
14.
The otic vessicle gives rise to which of the following?
A.
saccule
B.
utricle
C.
semicircular canals
D.
cochlear duct
E.
all of the above.
embryology exam II, form A, page 1, questions 1-14
15.
All of the following are derived from pharyngeal arch II except:
A.
stapes
B.
styloid process
C.
incus
D.
superior portion of hyoid bone
E.
all are derived from arch II.
16.
The cartilages of the larynx are derived mainly from the cartilages of which of the following
pharyngeal arches?
A.
2 and 3
B.
3 and 4
C.
3,4, and 5
D.
4 and 6
E.
4 and 5
17.
Structures derived from the surface ectoderm include the:
A.
lens
B.
otic vesicle
C.
external acoustic meatus
D.
corneal epithelium
E.
all of the above
18.
Which pharyngeal arch is associated with Treacher Collins syndrome?
A.
arch 1
B.
arch 2
C.
arch 3
D.
arch 4
E.
arch 6
19.
Which of the following structures is involved in the formation of a posterior cleft palate?
A.
pharyngeal arch 2
B.
pharyngeal arch 3
C.
palatine shelves
D.
frontonasal prominence
E.
maxillary process and medial nasal prominence
20.
Which of the following structures is involved in the formation of a cleft lip?
A.
pharyngeal arch 2
B.
pharyngeal arch 3
C.
palatine shelves
D.
frontonasal prominence
E.
maxillary process and medial nasal prominence
embryology exam II, form A, page 2, questions 15-20
21.
If the greater cornu and inferior part of the hyoid bone are absent at birth, which embryonic
structure was affected?
A.
maxillary prominence
B.
mandibular prominence
C.
second pharyngeal arch
D.
third pharyngeal arch
E.
fourth pharyngeal arch
ASSIGN THE FOLLOWING ADULT STRUCTURES TO THE EMBRYONIC STRUCTURE
FROM WHICH IT DEVELOPS. ONE ANSWER PER QUESTION. ANSWERS MAY BE USED
MORE THAN ONCE.
22.
cheeks
A.
frontonasal prominence
B.
medial nasal prominence
23.
primary palate
C.
lateral nasal prominence
D.
maxillary prominence
24.
philtrum of upper lip
E.
mandibular prominence
25.
alae of nose
26.
Which of the following pharyngeal arch/nerve pairs is incorrect?
A.
arch 3/glossopharyngeal
B.
arch 1/trigeminal
C.
arch 4/superior laryngeal
D.
arch 2/hypoglossal
E.
arch 6/recurrent laryngeal
27.
The relatively small size of the face of the newborn is due to:
A.
underdeveloped mandible
B.
unerupted teeth
C.
underdeveloped paranasal sinuses
D.
A and B
E.
A, B and C
28.
General sensory information from the anterior two-thirds of the tongue is carried by a branch
of the _____________ nerve.
A.
trigeminal
B.
facial
C.
vagus
D.
glossopharyngeal
E.
hypoglossal
29.
The most common site of a branchial fistula is the:
A.
dorsal aspect of the neck.
B.
anterior border of the sternocleidomastoid muscle.
C.
superior mediastinum.
D.
midline close to the hyoid bone.
E.
base of the tongue.
embryology exam II, form A, page 3, questions 21-29
30.
The intermaxillary segment of the upper jaw is formed when the maxillary prominences
merge with each other.
A.
true
B.
false
31.
The lower lip develops from arch one.
A.
true
32.
B.
false
An infant is diagnosed with an anterior cleft palate. This defect is located anterior to the
foramen cecum.
A.
true
B.
false
MATCH THE FOLLOWING WITH THE FIGURE AT THE RIGHT. ONE ANSWER PER
QUESTION. ANSWERS MAY BE USED MORE THAN ONCE.
33.
Becomes the tract of the optic nerve.
34.
Frequent site of retinal detachment.
35.
Derived entirely from surface ectoderm.
36.
Forms the neural layer of the retina.
37.
Becomes the pigmented layer of the retina
MATCH THE FOLLOWING WITH THE FIGURE AT THE RIGHT. ONE ANSWER PER
QUESTION. ANSWERS MAY BE USED MORE THAN ONCE.
38.
Gives rise to the utricle
39.
External acoustic meatus
40.
Derived from tubotympanic recess
41.
Meatal plug
42.
Membranous labyrinth
43.
The hypobranchial eminence contributes to the formation of the posterior part of the tongue.
A.
true
B.
false
44.
A branchial cyst is a remnant of the thyroglossal duct.
A.
true
B.
false
embryology exam II, form A, page 4, questions 30-44
45.
The thyroid gland is derived from arch:
A.
one
B.
two
C.
three
D.
four
E.
none of the above
46.
Neural crest cells contribute to the formation of the:
A.
facial bones
B.
sclera of the eye
C.
otic vesicle of the ear
D.
A and B
E.
A, B, and C
END OF EXAM
embryology exam II, form A, page 5, questions 44-46