3. Which of the following is not correct pertaining to olfaction?
A) The central processes of the olfactory receptor neurons pass through foramina in the cribriform plate.
B) The central processes of the right and left olfactory receptor neurons each collectively form the right and left olfactory nerve.
C) The olfactory nerves terminate in the olfactory bulb, which is in contact with the orbital surface of the frontal lobe of the brain.
D) The axons of secondary olfactory neurons form the olfactory tract.
E) The olfactory tract terminates in the medulla.
Ans: E
4. The optic chiasm:
A) is in the orbit.
B) refers to the central artery of the retina’s crossing of the subarachnoid space.
C) refers to partial splitting of the optic nerve fibers from each side to form the right and left optic tracts.
D) refers to the missing field in visual field deficits.
E) occurs in the lateral geniculate body.
Ans: C
5. Which of the following is not correct for the trochlear nerve?
A) It emerges from the posterior aspect of the brainstem.
B) Nerve injury is characterized by inability to focus on near objects.
C) Nerve injury is characterized by lack of coordination for the two eyes when looking downwards.
D) It traverses the lateral wall of the cavernous sinus.
E) It innervates the superior oblique.
Ans: B
6. Which of the following is not correct for the motor fibers of the trigeminal nerve?
A) They originate in the trigeminal ganglion.
B) They pass through foramen ovale.
C) They are distributed entirely with the mandibular division.
D) They innervate the muscles of mastication.
E) They innervate the tensor tympani muscle.
Ans: A
7. Which of the following associations is not correct?
A) corneal reflex—tests integrity of ophthalmic nerve
B) foramen rotundum—maxillary nerve
C) pterygopalatine ganglion—maxillary nerve
D) trigeminal neuralgia—loss of cutaneous sensation in areas of face supplied by trigeminal nerve
E) transection of mandibular nerve—deviation of mandible to lesion side
Ans: D
8. The geniculate ganglion:
A) contains the cell bodies of the motor fibers of the facial nerve.
B) contains the cell bodies of the sensory fibers of the facial nerve.
C) contains the synapses of the autonomic fibers of the facial nerve.
D) is located in the brainstem.
E) is located in the middle cranial fossa.
Ans: B
9. Which of the following is not correct pertaining to the VIIIth cranial nerve?
A) A lesion can result in tinnitus.
B) A lesion can result in vertigo.
C) A lesion can result in hearing loss.
D) It enters the internal acoustic meatus.
E) It contains somatic motor fibers.
Ans: E
10. A lesion of the facial nerve may result in all of the following except:
A) loss of taste from the anterior two-thirds of the tongue.
B) inability to open eye.
C) partial sensory denervation of the auricle.
D) increase in loudness of sound
E) loss of tear production.
Ans: B
11. A complete lesion of the oculomotor nerve would produce all of the following signs except:
A) ptosis.
B) absence of pupillary light reflex.
C) pupillary constriction.
D) abducted and laterally directed eyeball.
E) absence of accommodation reflex.
Ans: C
12. The IXth cranial nerve provides all of the following except:
A) sensation from the tongue.
B) sensation from the pharynx.
C) most of the fibers of the greater petrosal nerve.
D) motor innervation to the stylopharyngeus.
E) autonomic innervation to the parotid gland.
Ans: C
13. Jugular foramen syndrome could cause all of the following signs except:
A) inability to protrude the tongue.
B) dysphagia.
C) dysphonia.
D) sagging of the soft palate.
E) deviation of the uvula to the unaffected side.
Ans: A
14. Following an automobile accident resulting in a cranial base fracture, a patient’s tongue deviates to the right when protruded and he has moderate dysarthria. You suspect damage to the:
A) left hypoglossal nerve.
B) right hypoglossal nerve.
C) right glossopharyngeal nerve.
D) left glossopharyngeal nerve.
E) superior root of ansa cervicalis
Ans: B
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