Face, Neck and Chewing

Question 1

sternocleidomastoid origin, insertion, and 2 actions

Answer 1

origin: sternum and clavicle
insertion: temporal: mastoid process
Actions:
unilateral: tilt head up and to the side
bilateral: flex neck

Question 2

splenius capitis: 2 actions

Answer 2

unilateral: rotate and flex neck
bilateral: extend neck

Question 3

semispinalis capitis 2 actions

Answer 3

unilateral: rotate neck
bilateral: extend neck

Question 4

longissimus capitis 2 actions

Answer 4

unilateral: rotate and laterally flex neck
bilateral: extend neck

Question 5

genioglossus origin, insertion, and 2 actions

Answer 5

origin: mandible
insertion: tongue
Actions:
unilateral: draw tongue to side
bilateral: depress and protrude tonge

Question 6

hyoglossus origin, insertion, and 1 action

Answer 6

origin: hyoid
insertion: tongue
action: depress tongue

Question 7

digastric: anterior belly origin, insertion, and 2 actions

Answer 7

origin: mandible
insertion: hyoid at fascial sling
action 1: depress mandible
action 2: elevate hyoid

Question 8

digastric posterior belly origin and insertion

Answer 8

origin: temporal and mandible
insertion: hyoid at fascial sling

Question 9

geniohyoid origin, insertion, and 3 actions

Answer 9

origin: mandible
insertion: hyoid
action 1: depress mandible
action 2: elevate hyoid
action 3: protract hyoid

Question 10

mylohyoid origin, insertion, and 1 action

Answer 10

origin: mandible
insertion: hyoid
action: elevate floor of mouth

Question 11

stylohyoid origin, insertion, and 2 actions

Answer 11

origin: temporal: styloid process
insertion: hyoid
action 1: elevate hyoid
action 2: retract hyoid

Question 12

omohyoid origin, insertion, and 1 action

Answer 12

origin: scapula
insertion: hyoid
action 1: depress hyoid

Question 13

sternohyoid origin, insertion, and 1 action

Answer 13

origin: sternum: manubrium and clavicle
insertion: hyoid
action 1: depress hyoid

Question 14

thyrohyoid origin, insertion and 2 actions

Answer 14

origin: thyroid cartilage of larynx
insertion: hyoid
action 1: elevate larynx
action 2: depress hyoid

Question 15

sternothyroid origin, insertion, and 1 action

Answer 15

origin: Sternum: manubrium
insertion: thyroid cartilage of larynx
action 1: depress larynx

Question 16

platysma origin, insertion, and 2 actions

Answer 16

origin: fascia of chest
insertion: mandible
action 1: draw lower lip and angle of mouth downward
action 2: open mouth widely

Question 17

temporalis origin, insertion and 3 actions

Answer 17

origin: temporal fossa of cranium
insertion: mandible: coronoid process and ramus
action 1: elevate mandible
action 2: retract mandible
action 3: medial/lateral excursion of the mandible

Question 18

masseter origin, insertion, and 2 actions

Answer 18

origin: zygomatic arch
insertion: mandible: ramus and angle
action 1: elevate mandible
action 2: medial/lateral excursion of the mandible

Question 19

frontalis 2 actions

Answer 19

action 1: elevate eyebrows

action 2: draw scalp forward

Question 20

occipitalis 1 action

Answer 20

action 1: retract scalp

Question 21

orbicularis oculi 1 action

Answer 21

action 1: close eyes

Question 22

orbicularis oris 2 actions

Answer 22

action 1: close lips

action 2: protrude lips

Question 23

zygomaticus major 1 actions

Answer 23

action 1: draw angle of mouth up and laterally

Question 24

mentalis 2 actions

Answer 24

action 1: elevate lower lip

action 2: protrude lower lip

Question 25

buccinator 1 action

Answer 25

action 1: compress cheek against teeth and gums