Test 5 (head and neck anatomy)

1. The internal carotid artery:
a. lies in the floor of the middle ear

b. lies medial to the abducent nerve

c. enters the skull and divides into the anterior and middle cerebral arteries

d. is separated from the external carotid artery by the styloglossus

e. grooves the greater wing of the sphenoid bone

2. The internal jugular vein:

a. is separated from the sympathetic chain by the prevertebral fascia

b. lies anteromedial to the sympathetic chain.

c. is a continuation of the sigmoid sinus 

d. receives the anterior jugular vein

e. is separated from the inferior petrosal sinus by the 9th, 10th and 11th cranial nerves 

3. The following are true about the trigeminal nerve:

a. it supplies the muscle of mastication

b. its ganglion lies on the apex of the petrous bone

c. emerges from the brain stem between the pons and the medulla

d. emerges from the brain stem as separate sensory and motor roots

e. innervates all the teeth of the upper jaw

4. The following nerves are transmitted through the temporal bone:

a. vagus nerve

b. facial nerve

c. vestibulocohclear nerve

d. mandibular branch of the trigeminal nerve

e. olfactory nerve


5. The following are true about the circulation of the  cerebrospinal fluid (CSF):

a. is produced by the modified ependymal cells of the choroid plexus

b. is absorbed mainly through the arachnoid granulations in the superior sagittal sinus

c. the ventricular system communicates with the subarachnoid space through the roof of the 
    third ventricle

d. the arachnoid granulation is in contact with the endothelium of the venous sinuses

e. blockage of the arachnoid granulation causes communicating hydrocephalus


6. True statements about the medulla include:
a. contains the spinal nucleus of the trigeminal nerve which extends throughout the length of 
    the medulla

b. the vagus nerve emerge between the medulla and the inferior cerebellar peduncle

c. contains gracile nucleus which lies medial to the cuneate nucleus

d. the vagal nucleus lies medial to the hypoglossal nucleus

e. the pyramids decussate in the lower part of the medulla


7. The pterygopalatine ganglion:
a. supplies parasympathetic fibres to the lacrimal gland

b. sympathetic nerves from the superior cervical ganglion passes through it

c. is suspended from the maxillary nerve

d. supplies the iris

e. supplies secretomotor fibres to the glands of the nose


8. The parathyroid glands:
a. are found on the anterior surface of the thyroid glands

b. develops from the 3rd and 4th pharyngeal pouch endoderm

c. may be confused with fat globules

d. receives blood supply from the middle thyroid arteries

e. contain chief cells which have dark staining nuclei

9. True statements about the boundary of the nasal cavity include:

a. cribriform plate forms part of the roof

b. maxilla forms the floor of the cavity

c. vomer forms the lateral wall of the cavity

d. palatine forms part of the roof

e. the vertical plate of the ethmoid bone forms the medial wall


10. The following are true about the relations of the cavernous sinus:
a. it lies on the body of the sphenoid bone

b. it is situated above the pituitary gland

c. it is posterior to the superior orbital fissure

d. the maxillary branch of the trigeminal nerve passes through it

e. the trochlear nerve passes through it


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