Cranial Nerves

Question 1

1. Olfactory

type, foramen/fissure, function

Answer 1

Type: sensory

Foramen/Fissure: cribiform plate of ethmoid

Function: special sense of smell

Question 2

2. Optic

type, foramen/fissure, function

Answer 2

Type: sensory

Foramen/Fissure: optic foramen

Function: special sense of vision

Question 3

3. Oculomotor

type, foramen/fissure, function

Answer 3

Type: mixed

Foramen/Fissure: superior orbital fissure

Function: sensory & motor to extrinsic eye muscles

Question 4

4. Trochlear

type, foramen/fissure, function

Answer 4

Type: mixed

Foramen/Fissure: superior orbital fissure

Function: sensory & motor to extrinsic eye muscles

Question 5

5-1. Trigeminal-Opthalamic

type, foramen/fissure, function

Answer 5

type: sensory

Foramen/Fissure: Superior orbital fissure

Function: sensory to conjunctiva, upper eyelid, nasal mucosa, skin of nose and forehead

Question 6

5-2. Trigeminal-Maxillary

type, foramen/fissure, function

Answer 6

Type: sensory

Foramen/Fissure: foramen rotundum

Function: sensory to mouth, lower jaw & teeth, lips, tongue, external ear

Question 7

5-3. Trigeminal-Mandibular

type, foramen/fissure, function

Answer 7

Type: mixed

Foramen/Fissure: foramen ovale

Function: sensory and motor to chewing muscles; sensory to cheek, upper jaw, teeth

Question 8

6. Abducens

type, foramen/fissure, function

Answer 8

Type: motor

Foramen/Fissure: superior orbital fissure

Function: motor to extrinsic eye muscles

Question 9

7. Facial

type, foramen/fissure, function

Answer 9

Type: mixed

Foramen/Fissure: internal auditory meatus, stylomastoid

Function: motor to muscles of facial expression; sensory to salivary glands and taste buds

Question 10

8-1. Vestibulocochlear-cochlear

type, foramen/fissure, function

Answer 10

Type: sensory

Foramen/Fissure: internal auditory meatus

Function: special sense of hearing

Question 11

8-2. Vestibulocochlear-vestibular

type, foramen/fissure, function

Answer 11

Type: sensory

Foramen/Fissure: internal auditory meatus

Function: sense of equilibrium and position

Question 12

9. Glossopharyngeal

type, foramen/fissure, function

Answer 12

Type: mixed

Foramen/Fissure: jugular foramen

Function: sensory and motor to swallowing muscles; sensory to pharynx (pain, touch temp)

Question 13

10. Vagus

type, foramen/fissure, function

Answer 13

Type: mixed

Foramen/Fissure: jugular foramen

Function: motor to soft palate, pharynx, larynx; sensory to ear, pharynx, larynx, trachea, esophagus, meninges

Question 14

11. Accessory

type, foramen/fissure, function

Answer 14

Type: mixed

Foramen/Fissure: foramen magnum, jugular foramen

Function: motor & sensory to SCM, trapezius, larynx muscles for sound production

Question 15

12. Hypoglossal

type, foramen/fissure, function

Answer 15

Type: mixed

Foramen/Fissure: hypoglossal canal

Function: motor & sensory to muscles of chewing & swallowing, the larynx, tongue