Cranial Nerves

Question 1

What nerves are parasympathetic?

Answer 1

CN III, VII, IX, X

Question 2

Functional component related with smell or taste?

Answer 2

SVA

Think: when you’re sick and can’t smell properly, food doesn’t taste the same

Question 3

Functional component related with vision, hearing and balance?

Answer 3

SSA

Question 4

Functional component related with parasympathetic NS?

Answer 4

GVE

Question 5

Horners syndrome causes and effect:

Answer 5

= loss of sympathetic innervation of the head. Effects: Horner’s syndrome, loss of sympathetic innervation in the head, will cause ptosis, or a drooping eyelid, along with a constricted pupil and a flushed, dry face on the affected side.

Question 6

Nerves that go through the superior orbital fissure:

Answer 6

CN III, IV, V1, VI

Question 7

Functional component related with general somatic motor innervation

Answer 7

GSE

Question 8

Six extra-ocular muscles/cranial nerves:

Answer 8

LR6 (SO4) 3 ….
LR6 = CN VI, Lateral Rectus Muscle
SO4 = CN IV, Superior Oblique
Rest done by CN III: Levator palpebrae superiors, Superior rectus muscles, inferior rectus muscle, inferior oblique muscles,

Question 9

General Girl Scouts of America

Answer 9

GSA, general somatic afferent, V carries info back to brain

Question 10

Muscles of mastication:

Answer 10

temporalis, masseter, medial and lateral pterygoids

n: V3 (mandibular branch of trigeminal)

Question 11

Muscles of oral floor:

Answer 11

mylohyoid, anterior digastric

n: V3 (mandibular branch of trigeminal)

Question 12

Corneal Relfex:

Answer 12

Trigeminal V1 (opthalmic division); Afferents corneal reflex, blink with eye touch

Question 13

Inferior Alveolar N

Answer 13

Part of V3 (mandibular), INTO-enters the mandibular foramen, travels through the mandibular canal, exits through the mental foramen to become the mental n.

Question 14

Lingual N

Answer 14

Part of V3 (mandibular), UNDER, the mandible to innervate the touch, 2/3 anterior part of TOUCH

Question 15

What components of CN V carry parasympathetic fibers?

Answer 15

V1- carries fibers from ciliary ganglion
V2- carries fibers from the pterygopalantine ganglion
V3- carries fibers from the submandibular and optic ganglion

Question 16

Nerves that innervate the ear pinna:

Answer 16

CN VII, V, greater auricular n., lesser occipital n.

Question 17

Nerves exiting the internal auditory/acoustic meatus:

Answer 17

CN VII, CN VIII

Question 18

Nerves exiting the jugular foramen

Answer 18

CN IX, X, XI

Question 19

Nerves exiting the superior orbital foramen:

Answer 19

CN III, IV, V1, VI

Question 20

What functional component represents nerves from the branchial arch 1?

Answer 20

SVE

CN: V3, VIII, IX

Question 21

Nerves that monitor blood pressure:

Answer 21

baroreceptor reflex by CN IX; action sent out by CN X

Question 22

Pathway of parasympathetic fibers of CN IX to the parotid salivary gland:

Answer 22

GLOAP:

Glosopharyngeal n use LESSER PETROSAL N to the OPTIC GANGLION the AURICULOTEMPORL to the PAROTID