Face and Skull Muscle Actions Flashcards
1
Q
Occipitofrontalis - Frontal belly
A
- elevates eyebrows and wrinkles skin of forehead
2
Q
Occipitofrontalis - Occipital belly
A
- retracts scalp
3
Q
Buccinator
A
- Presses cheek against teeth
- Resists distension of cheek when blowing
4
Q
Orbicularis oris
A
- Closes mouth
- Compresses and protrudes lips
- Resists distension of lips when blowing
5
Q
Orbicularis oculi
A
- Closes eyelids
6
Q
Masseter
A
- Elevate and protrude mandible
7
Q
Temporalis
A
- Elevate and retrude mandible
8
Q
Lateral pterygoid
A
- Bilaterally: protrudes and depresses mandible
- Unilaterally: laterally deviates jaw to contralateral side
9
Q
Medial pterygoid
A
- Bilaterally: protrudes and elevates mandible
- Unilaterally: lateral deviates jaw to contralateral side
