Cranial Nerves

Question 1

Which nerve is the wanderer

Answer 1

Vagus

Question 2

Nerves exit ant EXCEPT

Answer 2

CN IV - post

CN VIII - lat

Question 3

Somatic motor

Answer 3

Skeletal muscle somites

III,IV,VI,XII

Question 4

Visceral motor (psym)

Answer 4

Glands and SM

III, VIII, IX, X

Question 5

Branchiomotor

Answer 5

Jaw, face, pharynx, larynx, head/shoulders

V, VII, IX, X, XI

Question 6

Trigeminal motor nucleus

Answer 6

Motor neurons that inn. muscles of mastication

Question 7

Corticobulbular tract

Answer 7

Motor to CN
V, VII, X, XII
Bilateral
VII nucleus bilateral controls upper part of face crossed input = lower part

Question 8

Lesion before CN VII nucleus

Answer 8

Opp side and lower facial weakness

Question 9

Lesion after CN VII nuc.

Answer 9

Same side both upper and lower weakness

Question 10

XI arises from

Answer 10

cervical SC

SVE

Question 11

GSA (sensory)

Answer 11

Pain, touch and position (V)

Question 12

GVA

Answer 12

Sensations input from organs

Question 13

SVA

Answer 13

Smell and taste

Question 14

SSA

Answer 14

Special head sensations -hearing, balance and vision

Question 15

Mesencephalic nuc

Answer 15

Only side where cell bodies of 1o afferent neurons live inside CNS

Question 16

Ventral trigeminothalamic tract

Answer 16

All fibres corssed

Question 17

Which CNS have small sensory input to spinal nuc. For general sensation and pain and temp around ear

Answer 17

CN VII, IX, X

Question 18

Sup and Inf Salivatory nuc - PSYM efferents to ganglia of salviary glands and pterygopalatine ganglion

Answer 18

CN VII AND IX (GVE)

Question 19

Nuc. ambiguus motor efferents to muscles of pharynx, larynx and upper oesphaghagus

Answer 19

CN IX and X (SVE)

Question 20

Solitary nuc. (taste and visceral sensory info)

Answer 20

CN VII, IX, X, (SVA, GVA)

Question 21

sva

Answer 21

sensation of taste