Cranial Nerves

Question 1

CN I

Answer 1

Name: olfactory n.
Foramen: olfactory foramen in ethmoid bone
Type: sensory
Fxn: sense of smell

Question 2

CN II

Answer 2

Name: optic n.
Foramen: optic canal of sphenoid bone
Type: sensory
Fxn: sense of sight/vision

Question 3

CN III

Answer 3

Name: oculomotor n.
Foramen: sup. orbital fissure of sphenoid
Type: motor
Fxn: moves eyes and eyelids; focuses the eyes

Question 4

CN IV

Answer 4

Name: trochlear n.
Foramen: sup. orbital fissure of sphenoid
Type: motor
Fxn: moves eye down and lateral

Question 5

CN V

Answer 5

Name: trigeminal n. 
Type: mixed 
3 Divisions -
Ophthalmic n. 
Maxillary n.
Mandibular n.

Question 6

Opthalmic division

Answer 6

Name: CN V trigeminal
Foramen: superior orbital fissure of sphenoid
Type: sensory
Fxn: from skin of nose, forehead, scalp, and cornea

Question 7

Maxillary division

Answer 7

Name: CN V trigeminal
Foramen: foramen rotundum of sphenoid
Type: sensory
Fxn: from skin of nose, upper lip, gums, teeth, & cheek

Question 8

Mandibular division

Answer 8

Name: CN V trigeminal
Foramen: foramen ovals of sphenoid
Type: sensory & motor
Fxn: from tongue, lower lip, gums, teeth, & cheek; mastication muscles

Question 9

CN VI

Answer 9

Name: abducens n.
Foramen: superior orbital fissure of sphenoid
Type: motor
Fxn: medial to lateral eye movement

Question 10

CN VII

Answer 10

Name: facial n.
Foramen: stylomastoid foramen of temporal & internal acoustic meatus
Type: sensory & motor
Fxn: from taste of ant. ⅔ of tongue, basal & palatial sensation; muscles of facial expression, lacrimal & salivary glands

Question 11

CN VIII

Answer 11

Name: Vestibulocochlear n.
Foramen: internal acoustic meatus of temporal
Type: sensory
Fxn: sense of hearing & equilibrium

Question 12

CN IX

Answer 12

Name: Glossopharyngeal n.
Foramen: jugular foramen of occipital
Type: sensory & motor
Fxn: from taste of post. ⅓ of tongue, pharynx, tonsils, & carotid arteries; muscles of pharynx used in swallowing

Question 13

CN X

Answer 13

Name: vagus n.
Foramen: jugular foramen of occipital
Type: sensory & motor
Fxn: from pharynx, larynx, esophagus, & visceral organs; muscles of speech & swallowing, autonomic motor fibers to the heart, smooth muscles and glands in the thorax

Question 14

CN XI

Answer 14

Name: accessory n.
Foramen: jugular foramen of occipital
Type: motor
Fxn: muscles of the pharynx, larynx, & soft palate and upper back/neck

Question 15

CN XII

Answer 15

Name: hypoglossal n.
Foramen: hypoglossal cabal of occipital
Type: motor
Fxn: muscles of the tongue