Cranial Nerves I-VI

Question 1

I

Answer 1

Olfactory

Question 2

I receptor, synapse, destination

Answer 2

Nasal epithelium, olfactory bulb at cribiform plate; olfactory cortex, hippocampus, amygdala, thamalus

Question 3

II

Answer 3

Optic

Question 4

II receptor, synapse, destination

Answer 4

Retina photoreceptor, optic chiasm, occipital lobe

Question 5

III

Answer 5

Oculomotor

Question 6

III nucleus, exit, muscles

Answer 6

Oculomotor and Edinger-Westpal lateral to cerebral aqueduct in superior coliculi, crus cerebri ventrally through superior orbital fissure, orbit muscles and levator pulpubrae

Question 7

IV

Answer 7

Trochlear

Question 8

IV nucleus, exit, muscles

Answer 8

Trochlear lateral to cerebral aqueduct in inferior colliculi, dorsally after wrapping around aqueduct, superior oblique

Question 9

VI

Answer 9

Abductens

Question 10

VI nucleus, exit, muscles

Answer 10

Floor of 4th ventricle, ventral, lateral rectus

Question 11

V

Answer 11

Trigeminal

Question 12

V nucleus, exit, muscles

Answer 12

4th ventricle, lateral pons, mastication

Question 13

V sensory branches

Answer 13

Ophthalmic, maxillary, mandibular

Question 14

V opthalmic area and entry

Answer 14

Skull, forehead, eye and nose; superior orbital fissure

Question 15

V maxillary area and entry

Answer 15

Lower lid, cheek and upper lip; foramen rotundum

Question 16

V mandibular area and entry

Answer 16

Lower lip and ear, foramen ovale

Question 17

A beta function and nucleus

Answer 17

General sensation and touch, pontine

Question 18

A delta function and nucleus

Answer 18

Pain and temperature, spinal

Question 19

A alpha function and nucleus

Answer 19

Lower jaw proprioception, mesencephalic

Question 20

Edinger-Westpal nucleus function

Answer 20

Accommodation reflexes e.g. pupil constriction to light