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Head
Muscles
12
Anatomy
Undergraduate 3
11/28/2009
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Term
Massester Origin
 Definition
From the zygomatic arch
Term
Masseter Insertion
 Definition
Masseteric fossa and adjacent portions of the mandible
Term
Masseter Action
 Definition
Elevation of mandible
Term
Temporalis Origin
 Definition
Most fibers originate from the temporal bone and a few from the zygomatic arch
Term
Temporalis Insertion
 Definition
Coronoid process of the mandible
Term
Temporalis Action
 Definition
Elevates mandible
Term
Digastric Origin
 Definition
From the mastoid and jugular process
Term
Digastric Insertion
 Definition
Medial ventral border of the mandible
Term
Digastric Action
 Definition
Depresses the mandible
Term
Pterygoideus Origin
 Definition
Pterygoid fossa
Term
Pterygoideus Insertion
 Definition
Medial surface of angular process on dentary
Term
Pterygoideus Action
 Definition
Close jaw
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