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)