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