Cranial Nerves, and Muscles of Head and Neck

Question 1

Cranial Nerve Types

Answer 1

Sensory, special sensory, motor, mixed (1x motor & 2x sensory) nerves

Question 2

Cranial Nerves Location

Answer 2

Innervate head and neck regions, exit through the foramen(s) in the base of the skull

Question 3

How many pairs of Cranial Nerves?

Answer 3

12 pairs (24 nerves), CNI - CNXII

Question 4

CNI

Answer 4

Special sensory; smell

Question 5

CNII

Answer 5

Special sensory; sight

Question 6

CNV

Answer 6

Mixed; muscles of facial mastication

Question 7

CNX

Answer 7

Mixed; larynx, heart, abdominal viscera

Question 8

Facial Expression Muscles

Answer 8

Frontalis, Orbicularis Oculi, Orbicularis oris, zygomaticus

Question 9

Frontalis

Answer 9

Front of the brain; raising eyebrows, wrinkle forehead

Question 10

Orbicularis Oculi

Answer 10

Around the eyes; controls size and shape of eye opening

Question 11

Orbicularis Oris

Answer 11

Controls size and shape of lips opening; talking, eating

Question 12

Zygomaticus

Answer 12

Elevates angle of mouth; smiling

Question 13

Mastication Muscles

Answer 13

Temporalis, Masseter, Pterygoids (med. & lat.)

Question 14

Temporalis

Answer 14

Flat and fan-shaped; elevates mandible

Question 15

Masseter

Answer 15

Square-shaped; elevates mandible

Question 16

Pterygoids (med. & lat.)

Answer 16

Two heads, lateral movement (side-to-side); protraction

Question 17

Head & Neck Movement Muscles

Answer 17

Sternocleidomastoid, Splenius

Question 18

Sternocleidomastoid

Answer 18

Neck flexion (bilateral & unilateral), neck rotation (OPPOSITE side)

Question 19

Splenius

Answer 19

Neck extension, neck flexion, neck rotation (SAME side)