Muscles Of Mastication Flashcards Preview

F16: Oral Anatomy > Muscles Of Mastication > Flashcards

Flashcards in Muscles Of Mastication Deck (6)
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1
Q

Masseter origin, insertion, and action?

A

O: Zygomatic arch

I: Lateral ramus, angle, lower border of mandible

A: Closes mouth

2
Q

Temporalis origin, insertion, and action?

A

O: Temporalis fossa

I: Anterior border or coronoid process of ramus

A: Anterior fibers close mandible; Posterior fibers retract the mandible.

3
Q

Medial Pterygoid origin, insertion, and action.

A

O: Pterygoid fossa on medial surface of lateral pterygoid plate

I: Medial surface of mandible above angle

A: Closes mandible

4
Q

Lateral Pterygoid upper head origin, insertion, and action?

A

O: greater wing of sphenoid below temporal

I: Neck of condylar process & capsular disc

A: lateral movement or open mandible

5
Q

Lateral pterygoid lower head origin, insertion, and action?

A

O: lateral side of lateral Pterygoid plate on sphenoid

I: anterior neck of condylar process

A: lateral movement or opens mandible

6
Q

Supra and infrahyoids do what to the mandible?

A

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