Chapter 4 Cranial Nerves

Question 1

65 year old woman presents with small blister like sores on her forehead stretching to the crown of her head, on her upper, but not lower eyelid, and onto the bridge of her nose. She is diagnosed with shingles (herpes zoster). What division of the trigeminal nerve (CN V) is infiltrated by the virus?

Answer 1

Opthalmic

Question 2

Special sensory taste is perceived in the posterior 1/3 of the tongue via the

Answer 2

Glossopharyngeal nerve (CN IX)

Question 3

Biting the tip of your tongue sends afferent signals to the brain via the

Answer 3

Lingual nerve (mandibular division CN V)

Question 4

A boy age 12 has been diagnosed with lyme disease. He presents with flaccid facial muscles on the left side of his face making it difficult to keep fluid in his mouth when drinking and leading to an inability to close his eye on the effected side. He is diagnosed with Bell’s Palsy. Which cranial nerve has been effected?

Answer 4

Facial Nerve (CN VII)

Question 5

Which of the following ocular muscles is innervated by the trochlear nerve (CN IV)?

Answer 5

Superior oblique

Question 6

Which of the following muscles is supplied by the glossopharyngeal nerve (CN IX)?

Answer 6

Stylopharyngeus

Question 7

Which cranial nerve supplies preganglionic parasympathetic fibers to the lacrimal gland?

Answer 7

Facial nerve (CN VII)

Question 8

Which cranial nerve supplies preganglionic parasympathetic fibers to the parotid gland?

Answer 8

Glossopharyngeal nerve (CN IX)

Question 9

Which cranial nerve permits our dexterous human tongues to create consonants and ‘package’ our vowel sounds?

Answer 9

Hypoglossal nerve (CN XII)

Question 10

Which of the following nerves would be categorized as carrying/supplying somatic motor as opposed to branchial motor nerve fibers?

Answer 10

Oculomotor (CN III)