Download Taste sensation from the oral part (anterior two

1. Taste sensation from the oral part (anterior two-thirds) of the tongue is predominately carried by
A.
B.
C.
D.
E.
Trigeminal nerve (CN V)
Chorda tympani branch of the facial nerve (CN VII)
Glossopharyngeal nerve (CN IX)
Superior laryngeal branch of the vagus nerve (CN X)
Recurrent laryngeal branch of the vagus nerve (CN X)
2. Abnormalities of the thymus and superior and inferior parathyroid glands are exhibited by infants suffering
from DiGeorge syndrome. These specific malformations indicate that DiGeorge syndrome affects development
of which of the following pharygeal pouches?
A. 1st only
B. 1st and 2nd
C. 2nd and 3rd
D. 3rd only
E. 3rd and 4th
3. The intermaxillary segment forms via the fusion of the
A.
B.
C.
D.
E.
Maxillary prominences
Mandibular prominences
Palatine shelves
Lateral nasal prominences
medial nasal prominences
4. What is the most common congenital malformation of the head and neck region?
A.
B.
C.
D.
E.
Anterior cleft plate
Posterior cleft palate
Thyroglossal duct cyst
Unilateral cleft lip
ankyloglossia
5. An infant born to a mother who used retinoid-based anti-acne medications during early pregnancy, exhibits
bilateral cleft lip. The most likely cause of the anomaly was retinoic acid-mediated reduction of mesenchymal
proliferation in which of the following structures?
A. Lateral nasal process
B. Intermaxillary process
C. Mandibular Swellings
D. Second pharyngeal arch
E. Third pharyngeal arch
6. All of the following statements concerning the cochlear duct are correct EXCEPT
A.
B.
C.
D.
E.
It arises from the otic vesicle
It is of ectodermal origin
It communicates with the saccule via the ductus reuniens
It contains the spiral organ of Corti
It contains perilymph
7. All of the following statements concerning the tympanic cavity are correct EXCEPT
A.
B.
C.
D.
E.
It is of mesodermal origin
It develops from the tubotympanic recess
The malleus and incus develop from pharyngeal arch 1
The stapes developsfrom pharyngeal arch 2
It communicates with the nasopharynx
8. The surface ectoderm gives rise to the
A.
B.
C.
D.
E.
Dilator pupillae muscle
retina
lens
sclera
choroid
9. All of the following statements concerning the ciliary body are correct EXCEPT
A.
B.
C.
D.
E.
Is derived from two sources
Plays a role in accommodation
Produces aqueous humor
Gives rise to the suspensory ligament
Contains the hyaloid canal
10. In a detached retina, the site of detachment is found
A.
B.
C.
D.
E.
Within the outer plexiform
Within the inner plexiform layer
Between the inner nuclear layer and the outer nuclear layer
Between the choriocapillaris and the pigment epithelial layer
Between the pigment epithelial layer and the layer of outer segments of rods and cones