Axial Musculature: Head and Neck Flashcards Preview

Anatomy 2201 > Axial Musculature: Head and Neck > Flashcards

Flashcards in Axial Musculature: Head and Neck Deck (18):
1

Muscles of Facial Expression (4)

Orbicularis Oris
Orbicularis Oculi
Frontalis
Buccinator

2

Muscles of Mastication (4)

Temporalis
Masseter
Pterygoids (lateral and medial)

3

Muscles of the Tongue (1)

Genioglossus:
--action: protracts (protrudes) tongue

Origin: mandible
Insertion: posterior part of tongue

*Genio: think genesis...genesis=origin; tongue helps you form words, tongue helps origin of words (Thanks Keeley!!)

4

Muscles of the Neck (1)

Sternocleidomastoid (SCM)
--actions:
-->unilateral: flexes forehead laterally
-->bilateral: flexes head/neck toward sternum

Origin: mastoid process
Insertion: medial end of clavicle and sternum

5

Extraocular Muscles

6 Muscles that move the eye:
--superior oblique
--inferior oblique
--superior rectus
--inferior rectus
--lateral rectus
--medial rectus

Aid in movement, adduction, abduction, etc.

6

Orbicularis Oris

muscle of facial expression

sphincter/circular
action: puckers/closes lips

Origin: skin around mouth
Insertion: within skin of face

7

Orbicularis Oculi

muscle of facial expression

sphincter/circular
action: closes eyelids

Origin: skin around eyes
Insertion: within skin of face

8

Frontalis

muscle of facial expression

action: raise eyebrows

Origin: skin on forehead
Insertion: within skin of face

9

Buccinator

muscle of facial expression

action: tightens the cheeks

Origin: mandible/maxilla
Insertion: within skin of face

10

Temporalis

muscle of mastication

action: elevates and retracts mandible (closes jaw)

Origin: lateral cranium
Insertion: coronoid process of mandible

11

Masseter

muscle of mastication

action: elevate mandible (close jaw)
--according to wk 8 pre-class quiz, it also protracts the mandible

Origin: zygomatic arch
Insertion: mandible

12

Pterygoids (lateral and medial)

muscle of mastication

action: elevates and protracts mandible; side to side grinding

Origin: sphenoid
Insertion: mandible

13

Superior Oblique

muscle of eye

action: depresses and abducts eye

Origin: sphenoid
Insertion: eyeball

14

Inferior Oblique

muscle of eye

action: elevates and abducts eye

Origin: maxilla
Insertion: eyeball

15

Medial Rectus

muscle of eye

action: adducts eye

Origin: common tendinous ring
Insertion: eyeball

16

Lateral Rectus

muscle of eye

action: abducts eye

Origin: common tendinous ring
Insertion: eyeball

17

Inferior Rectus

muscle of eye

action: depresses and adducts eye

Origin: common tendinous ring
Insertion: eyeball

18

Superior Rectus

muscle of eye

action: elevates and adducts eye

Origin: common tendinous ring
Insertion: eyeball