A&P - CRANIAL NERVES - A&P 2 Flashcards Preview

A&P 2 > A&P - CRANIAL NERVES - A&P 2 > Flashcards

Flashcards in A&P - CRANIAL NERVES - A&P 2 Deck (12)
1

Cranial nerve I

Olfactory

Sensory

Smell

2

Cranial nerve II

Optic

Sensory

Vision

3

Cranial nerve III

Oculomotor

Mostly motor


Eye movement

4

Cranial nerve IV

Troclear

Mostly motor


Eye movement

5

Cranial nerve V

Trigeminal

Class: mixed

Function: sensation of head and face; chewing proprioception

6

Cranial nerve VI

Abducens

Mostly motor

Eye movement

(Abduction of eye)

7

Cranial nerve VII

Fascial


Both

Facial expressions, secretes tears and saliva

8

Cranial nerve VIII

Vestibulocochlear


Sensory

Hearing, equilibrium, balance

9

Cranial nerve IX

Glossophayngeal

Mixed

Function: SENSORY:somatic taste, posterior tongue sensations (touch, pain, temp), proprioception in swallow muscles, visceral- monitor Hb pressure, O2/CO2 in Hb for regulating breathing rate and depth
MOTOR: somatic muscle function of swallowing and speech, ANS stimulates saliva secretion

10

Cranial nerve X

Vagus "wandering"

Mixed

Sensation - sensation of movement of pharynx, larynx, thoracic and abdominal viscera via stretch receptors (taste and touch, pain, temp) parasympathetic fibers chemoreceptors to all organs except adrenal glands (BP, o2/co2 for breathing)

Motor- skeletal muscle throat and neck (swallow, cough, voice); parasympathetic to smooth muscle (GI tract contraction/relaxion, slow heart, secrete digestive fluids ) rest and digest

11

Cranial nerve XI

Accessory

Mostly motor

2 divisions: the cranial division joins the vagus nerve and does same function as other vegas nerve fibers; accessory division is motor innervation to SCM and traps ( movement of head and shoulders)

12

Cranial nerve XII

Hypoglossal nerve

Mostly motor

Function: SENSORY- sensory proprioception from the tongue ,

MOTOR - movement of tongue during speech and swallowing