Unit 1 - Cranial Nerve Overview Flashcards
Olfactory - type?
Special sensory
Olfactory - fibers in the olfactory mucosa traverse the ________ and synapse on the ______.
cribriform plate, olfactory bulb
Optic - type?
Special sensory
Optic - fibers from the ______ converge on the _______ and are carried in the ________, ____, and tract to the __________?
retina, optic disc, optic nerve, chasm,
lateral geniculate body
Do all nerves cross over in the optic chiasma?
no
Oculomotor - type?
Motor; somatic and parasympathetic
Oculomotor supplies?
5 somatic muscles and
2 visceral muscles
Trochlear - type?
Somatic motor
Which is the smallest cranial nerve?
trochlear- CN IV
Trochlear (CN-IV) supplies which muscle?
Superior oblique
Which cranial nerve is on posterior side of brain stem and fibers cross over?
Trochlear
What is the function of the superior oblique muscle?
Turns eyes down and out
Trigeminal - type?
Mixed; somatic motor and sensory
Which is the “Great Sensory Nerve of the Face”?
Trigeminal
Trigeminal sensory areas include?
orbit, nasal cavity and paranasal sinuses, oral cavity, ear, internal skull
Which is the largest cranial nerve?
trigeminal
Which cranial nerves is supply to the muscles of mastication?
Trigeminal
Abducens - type?
Somatic motor
The abducens cranial nerve supplies which muscle?
Lateral rectus
Facial nerve - type?
Mixed:
Motor - somatic and parasympathetic
Sensory - somatic and special
What is the “Nerve of Facial Expression”?
Facial Nerve
Which cranial nerve carries taste information from the anterior 2/3 of the tongue?
Facial nerve
The facial nerve supplies which muscles?
Muscles of facial expression including
stylohyoid and stapedius
The facial nerve supplies which glands?
lacrimal and salivary
Vestibularcoclear - type?
Special sensory
Vestibularcochlear gets sensory information from where?
Cochlear and vestibule
Glossopharyngeal - type?
Mixed:
Motor: brachiomotor and parasympathetic
Sensory: somatic, special, and visceral
Glossopharyngeal carries taste information from where?
Posterior 1/3 of the tongue
Glossopharyngeal is motor supply to what?
stylopharyngeus
Glossopharyngeal has parasympathetic supply to what?
the parotid gland
What is the longest of cranial nerves?
vagus
Vague has motor supply to which particular muscles?
pharyngeal constrictors
Vagus - type?
Mixed
Motor: brachiomotor and parasympathetic
Sensory: somatic, special, and visceral
Vagus has parasympathetic supply to where?
Bronchi, heart, GI tract from esophagus to distal 1/3 of the transverse colon.
The accessory nerve contains 2 parts. What are they?
Cranial and spinal parts
Accessory nerve - type?
motor
What does the accessory nerve supply?
Muscles of the pharynx, larynx, and palate (cranial part) and the trapezius and SCM (spinal part)
Hypoglossal - type?
Motor
What does the hypoglossal nerve supply?
Supplies intrinsic and extrinsic muscles of the tongue
Which cranial nerves are special sensory only?
Olfactory, optic, and vestibular cochlear
Which cranial nerves are motor only?
Trochlear, Oculomotor, Abducens, Accessory, and Hypoglossal
Which cranial nerves are mixed?
Trigeminal, facial, Glossopharyngeal, vagus
Which cranial nerves have parasympathetic motor?
oculomotor, facial, Glossopharyngeal, vagus
