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Muscles of the Head- mastication
Muscles of the head- mastication
5
Anatomy
Undergraduate 1
11/04/2009

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Cards

Term
Masseter
Definition

Origin: Zygomatic arch

Insertion: Angle of mandible

Action: Prime mover for jaw movement

Term
Temporalis
Definition

Origin: Temporal fossa

Insertion: Coronoid process of mandible

Action: Closes jaw; retracts mandible (jaw closed at rest)

Term
Pterygoids: Medial
Definition

Origin: Sphenoid; perpendicular plate, medial surface

Insertion: Mandible

Action: Elevates jaw

Term
Pterygoids: Lateral
Definition

Origin: Sphenoid; greater wing

Insertion: Condyle of mandible

Action: Protrudes mandible

Term
Bucinator
Definition

Origin: Maxilla and mandible

Insertion: Oribcularis oris

Action: draws corner of mouth laterally

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