Cranial Nerves and Swallowing Mechanics - Test Bank Chapter 07

Which of the following cranial nerves are developed embryologically from branchial arches?

VII

Cranial nerve VIII

developed from branchial arches.

Diplopia would result from a lesion of the

trochlear nerve

Which of these nerves has a visceral component

Oculomotor

A patient who is able to smile while laughing but cannot smile on command likely has a

unilateral lesion of an upper motor neuron innervating the facial nerve

The _______________ has a primary role in chewing.

Mandibular nerve of the trigeminal

The _______________ enables a person to spread the lips

Branchial motor component of the facial nerve

The visceral component of cranial nerve _______________ is responsible for salivation.

VII and IX

A patient who cannot move the jaw to one side has a(n)

unilateral lesion of the trigeminal nerve

An examiner who brushes a patient's forehead with a cotton swab is testing the integrity of

the ophthalmic branch of the trigeminal nerve.

Cochlear nerve located in

the spiral ganglion

An insect lands on your ear and goes into the auditory canal. Which of these cranial nerves will help transmit the sense of touch to the somatic sensory cortex?

Cranial nerves V, VII, and X

Which of these cranial nerves does not have a visceral component?

V

Which of these groups of cranial nerves can be found in a dissection of the medulla?

The glossopharyngeal, vagus, spinal accessory, and hypoglossal

The _______________ provides efferent innervation to pharyngeal muscles.

nucleus ambiguus

It is difficult to assess the integrity of cranial nerve IX apart from X because

the vagus nerve has a larger role in the sensory and motor functions of the glossopharyngeal nerve.

Which of the following is NOT a function of the vagus nerve, recurrent laryngeal branch?

Innervation of all the intrinsic muscles of the larynx

Which of the following is NOT a function of the superior laryngeal nerve of cranial nerve X?

Sensory information from the tip of the tongue

One week after the onset of a stroke, a clinician examines a patient's oral cavity and finds the palate does not elevate upon the phonation of ah. Why does the examiner then test the gag reflex?

An intact gag reflex means that cranial nerves IX and X are functioning.

A lesion in the superior laryngeal nerve would likely result in

an inability to change pitch

Cranial nerve _______________ has a spinal as well as a cranial root.

XI

Which of the following muscles is NOT innervated by the hypoglossal nerve?

All of these muscles are innervated by the hypoglossal nerve

Upon protrusion, a patient's tongue deviates to one side, which is evidence of

unilateral lower motor neuron damage and unilateral upper motor neuron damage depending on the side of the lesion

A clinician places a few fingers on a patient's cheek and asks him to resist the pressure on his cheek by pushing his cheek with his tongue. The clinician is likely testing for

the lateral strength of the tongue

During the _______________ phase of deglutition, the larynx is elevated.

pharyngeal

The _______________ stage of deglutition is voluntary and is approximately 1 second in duration.

oral

The purpose of pharyngeal constriction during the pharyngeal phase of swallowing is to

clear the bolus from the laryngeal vestibule

_______________ are the cranial nerves that innervate muscles involved in swallowing.

V, VII, IX, X, and XII

_______________ are the cranial nerves that mediate sensory stimuli that trigger the swallow response.

V, IX, and X

A clinician has determined that a patient's vagus nerve has been damaged, affecting the contraction of the pharyngeal constrictor muscles. Knowing this, which type of swallowing assessment is indicated?

Request a modified barium swallow

The trigeminal nerve has a special sensory component involved in taste.

FALSE

The vestibular nerve is exclusively afferent, receiving impulses from the utricle, saccule, and semicircular canals.

FALSE

Rarely are both vocal folds completely paralyzed as a result of an upper motor neuron lesion.

TRUE

Asking a patient to produce the phoneme /t/ is a good test of the strength of elevation of the tongue tip.

TRUE

Pharyngeal contractions (peristalsis) are the major force that pushes the bolus through the pharynx in the pharyngeal phase of swallowing.

FALSE

The primary afferent nerve in the swallow response is the vagus

FALSE

Cranial nerves can either be general if they serve multiple structures, or special if they serve only one. Cranial nerve X (vagus) is an example of a general cranial nerve, while nerves I (olfactory) and II (optic) are examples of special cranial nerves.

TRUE

Cranial nerve V (trigeminal) innervates all muscles of mastication

TRUE

The facial nerve (CN VII) provides gustatory sensation to the posterior third of the tongue.

FALSE

The facial nerve (CN VII) provides innervation to muscles of facial expression.

TRUE

There are three functions of the vestibulocochlear or auditory nerve (VIII): innervation of the cochlea for hearing, innervation of the vestibular system for balance, and innervation of the tongue for sensation.

FALSE

Cranial nerve X (vagus) is the main enervator of laryngeal muscles.

TRUE

Almost all tongue muscles are enervated by the glossopharyngeal nerve (IX).

FALSE

Coordination of the swallowing and breathing function is essential to a safe swallow.

TRUE

Breathing ceases briefly during swallowing

TRUE