quiz #3 Flashcards
(18 cards)
Cranial NN 1 - Olfactory
primary function: special sensory- smell
origin: receptors of olfactory epithelium
pass through: olfactory foramina in cribiform plate of ethimoid
destination: olfactory bulbs
cranial nerve II - optic
primary function: special sensory- vision
origin: retina of the eye
pass through: olfactory formaina in cribiform plate of ethmoid
destination: olfactory bulbs
cranial nerve III - oculomotor
primary function: motor (eye movement)
origin: mesencephalon
pass through: superior orbital fissures of sphenoid
destination: somatic motor- superior, inferior and medial recurs muscles; inferior oblique mm; levator palpabrae
superior is mm. visceral motor: intrinsic eye mm
“early morning nn, open eyes, pupils contract”
cranial nerve IV - trochlear
primary function: motor (eye movements)
origin: mesencephalon
pass through: superior orbital fissures of sphnoid
destination: superior oblique mm
“cheater nn, helps you look inferolaterally”
cranial nn V - trigeminal
function: BOTH (S&M) to face
destination: all 3 branches to sensory nuclei in pons; mandibular branch also innervated the mm of mastication (temporal mm, lateral and medial pterygoid & masseter)
cranial nn VI - abducens
function: MOTOR - eye movement
origin: pons
destination: lateral rectus mm
**does lateral eye movement
cranial nn VII - facial
function: BOTH (S&M)
- sensory: taste receptors an anterior 2/3 of tongue
- motor: motor nuclei of pons
destination:
- sensory: nuclei of pons
- somatic motor: mms of facial expression
“tequila nn, sucking on a lemon, taste, wincing face, secreting saliva”
cranial nn VIII - vestibulocochloear
function: SENSORY
- balance & equilibrium (vestibular branch)
- hearing (cochlear branch)
cranial nn X - vagus
function: BOTH (S&M) distributed in thorax and abdomen
- serves taste buds in throat and epiglottis
cranial nn XI - accessory
function: MOTOR to mm of the neck and upper back
- controls SCM and traps
- lesion would cause dropping shoulders
what is the origin of the optic NN (II)
retina of the eye
what is the destination mm of the trochlear nn (IV)
superior oblique muscle
what set of mm’s do the trigeminal nerve (V) innervate
muscles of mastication
what is the destination mm of the abducens nn (VI)
lateral rectus muscle
what nerve provides sensory to tease receptors on the anterior 2\3 of the tongue
facial
what nn provides sensory to the posterior 1/3 of the tongue
glossopharyngeal
the parotid gland is involved with what nn
glossopharyngeal
what muscles do the accessory nn control
scm & traps
