unit3 - cranial nerves

There are ______ pairs of cranial nerves.

12

The trigeminal nerve has ______ divisions.

3

The facial nerve conveys motor innervation to muscles of facial expression via its ______ branches.

5

Identify the cranial nerves that control movements of the eye. Select all that apply.

IV. Trochlear nerve III. Oculomotor nerve VI. Abducens nerve

Identify the functions of the facial nerve. Select all that apply.

Transmits taste sensation from the tongue, controls secretion of tears, controls secretion of saliva, controls muscles of facial expression

Motor control to the trapezius and sternocleidomastoid muscles used in moving the head, neck, and shoulders is conveyed by the _____ nerve.

accesory

The trigeminal nerve transmits what type of impulses?

both motor and sensory

abducens nerve

controls lateral movement of the eye

oculomotor nerve

controls movement of the eye, constriction, of the pupil and focusing

hypoglossal nerve

controls movements of the tongue and swallowing

accessory nerve

controls swallowing and movements of the head, neck, and shoulders

glossopharyngeal nerve

controls the secretion of the salivary glands and swallowing; also transmits taste, touch, pressure, and pain sensations from the tongue

Twelve pair of nerves that arise from the base of the brain, exit through skull foramina, and lead to muscles and sense organs primarily of the head and neck are classified as _____.

cranial nerves

Motor control to many of the muscles of facial expression as well as taste sensation from the anterior 2/3 of the tongue is provided by the _____ nerve.

facial

Primary motor control of tongue movements is provided by the _____ cranial nerve.

hypoglossal

The vagus (X) nerve transmits what type of impulses?

mixed

A memory-aiding phrase to help remember anatomy names and terms (like the order of cranial nerves) is called a

mnemonic

The abducens nerve conveys primarily ______ fibers.

motor

The hypoglossal (XII) nerve transmits what type of impulses?

motor

The predominant type of impulse transmitted by the trochlear nerve is _______.

motor

The primary type of impulse transmitted by the accessory (XI) nerve is _____.

motor

Cranial nerves are traditionally classified as ______.

motor, sensory, and mixed

Cranial nerves that convey motor pathways terminate on ______. (Choose all that apply.)

muscles and glands

Motor impulses which control movements of the eyeball, and upper eyelid as well as pupillary constriction and focusing are transmitted by the ______ nerve.

oculomotor (III)

The cranial nerve that passes through the cribriform plate in the roof of the nasal cavity functioning in the sense of smell is the ______ nerve.

olfactory

Visual stimuli are transmitted by the _____ nerve.

optic

facial nerve

primary nerve that controls movement of the facial muscles

vagus nerve

primary nerve that controls movement of the facial nerves

trigeminal nerve

primary nerve that transmits sensory information from the face

It must be kept in mind that cranial nerves that are traditionally classified as motor not only stimulate muscle contractions but also contain fibers of _____ primarily from the muscles that they innervate.

proprioception

Cranial nerves that convey sensory pathways originate in _____.

receptors

The optic nerve (II) conveys ______ impulses.

sensory

The function of the vestibulocochlear (VIII) nerve is to transmit ______.

sensory signals for hearing and equilibrium

Cranial nerves that convey motor pathways have cells bodies located in _____.

the brainstem

Cranial nerves that convey sensory pathways terminate in

the brainstem

olfactory nerve

transmits information for the sense of smell

optic nerve

transmits information for the sense of vision

vestibulocochlear nerve

transmits informations for the sense of hearing and balance

This cranial nerve functions to sense touch, pain, and temperature on the upper and lower face and to transmit motor impulses needed for chewing. It is the _____ nerve.

trigeminal

Sensory signals for hearing and equilibrium from the inner ear are conveyed by the _______ cranial nerve.

vestibulocochlear (VIII)