muscles of the head

Question 1

what is this muscle? Origin? Insertion? Action?

Answer 1

occupitofrontalis

Origin: aponeurosis
Insertion: skin of eyebrows
action: raises eyebrows

Question 2

what is this muscle? Origin? Insertion? Action?

Answer 2

Orbicularis oculi

Origin: frontal bone + maxilla
Insertion: skin of eyelid
action: closes eyelid

Question 3

what is this muscle? Origin? Insertion? Action?

Answer 3

Temporalis

Origin: Temporal bone
Insertion: coronoid process of the mandible
action: elevates and retracts mandible

Question 4

what is this muscle? Origin? Insertion? Action?

Answer 4

Masseter

Origin: zygomatic arch
Insertion: mandibular ramus
Action: elevates mandible

Question 5

what is this muscle? Origin? Insertion? Action?

Answer 5

buccinator
origin: mandible and maxilla
insertion: orbicularis oris
action: compress cheek

Question 6

what is this muscle? Origin? Insertion? Action?

Answer 6

orbicularis oris

Origin: skin and muscle at corner of mouth
Insertion: skin of mouth
Action: closes lips

Question 7

what is this muscle? Origin? Insertion? Action?

Answer 7

zygomatic major and minor

Origin: zygomatic bone
Insertion: skin + muscle at the corner of mouth
Action: elevates corners of mouth

Question 8

what is this muscle? Origin? Insertion? Action?

Answer 8

Risorious

Origin: zygomatic arch
Insertion: modiolus of mouth
action: pulls lips back