Cranial Nerves

Question 1

GSA

Answer 1

General somatic afferents

exteroceptive (pain touch temp)- inside out
Proprioceptive- impulses from withing the body wall, tendons, joints

V VII IX X

Question 2

GVA

Answer 2

fibers carrying sensory info (pain) from visceral structures lined by epithelium of endodermal origin

posterior tongue, ducts, carotid sinus, pharynx, Eustachian, middle ear, larynx, esophagus, bronchial tree, gut, genitourinary ducts

VII IX X

Question 3

GSE

Answer 3

carry motor impulses to somatic skeletal muscles

III, IV VI XI XII

Question 4

GVE

Answer 4

autonomic fibers which innervate smooth muscle (CV, gut, and vascular)
GVE-P and GVE

III, VII IX X

Question 5

SSA

Answer 5

special somatic afferent
carry info to the ear and eye (vision, hearing, equilibrium)

II VIII

Question 6

SVA

Answer 6

special visceral afferent
specialized fibers for olfactory and gustatory receptors

**prepare digestive tract, hence “visceral”

I VII IX X

Question 7

SVE

Answer 7

innervate skeletal muscles derived from the visceral arch mesoderm (masitcation, facial expression, pharynx, palate larynx

arches 1,2,3,4,6

V VII IX X

Question 8

CN I

Answer 8

olfactory
SVA
Sensory

Question 9

CN II

Answer 9

Optic
SSA
Sensory

Question 10

CN III

Answer 10

Oculomotor
GSE, GVE-P
Motor

Question 11

CN IV

Answer 11

Trochlear
GSE
Motor

Question 12

CN V

Answer 12

Trigeminal

GSA, SVE

Question 13

CN VI

Answer 13

Abducens
GSE
Motor

Question 14

CN VII

Answer 14

Facial
GSA-ear
GVA- litte upper pharynx
SVA- taste from anterior tongue
GVE-P-mucus glands of nose, lacrimal gland, submandibular and sublingual gland
SVE- arch 2 mm. (post digastric, stylohyoid, stapedius)
both

Question 15

CN VIII

Answer 15

Vestibulocochlear
SSA
Sensory

Question 16

CN IX

Answer 16

Glossopharyngeal 
SVE- stylopharengeus 
GSA- posterior ear
SVA-taste to posterior tongue 
GVA= posterior tongue, and upper pharynx 
GVE-P- parotid gland 
Both

Question 17

CN X

Answer 17

Vagus
SVE: Motor to arch muscles from pharynx to eso
GVE-P:PSNS to heart, tongue, lungs and digestive sys
GSA: sensory from external ear—>post cranial fossa
SVA: Taste to epiglottic region
GVA: sensory from carotid body–>larynx—>colon
Both

Question 18

CN XI

Answer 18

Spinal accessory
GSE
Motor

Question 19

CN XII

Answer 19

Hypoglossal
GSE
Motor