1E-MASTICA Flashcards

1
Q

What are the 4 muscles of mastication? What are they innervated by?

A

1.Masseter 2.Temporalis 3.Lateral Pterygoid 4.Medial Pterygoid…Innvervated by V3 (all things mandibular)

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2
Q

Which muscle is the most powerful jaw elevator?

A

the Masseter

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3
Q

Which muscle OPENS the mouth?

A

Lateral Pterygoid

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4
Q

What is the goal of mastication?

A

to make a BOLUS!

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5
Q

What is the result of the complex 3D movement involving the jaw?

A

A “looping” pattern

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6
Q

The _______ and ________ move in coordination with jaw movements.

A

tongue and hyoid bone

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7
Q

What atet the three phases of mastication? What is the strongest phase? What is the longest phase?

A

1.Opening-Relax Elevators, Contract openers 2.Closing-elevation and turns to working side 3.Occlusal-STRONGEST forces exerted-LONGEST component of cycle

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8
Q

What 2 musles protrude the mandible?

A

Lateral Pterygoid, some medial pterygoid

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9
Q

What 2 muscles retract the mandible?

A

Temporalis (posterior), masseter(deep)

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10
Q

What 3 muscles elevate the mandible?

A

Temporalis, Masseter, Medial Pterygoid

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11
Q

What main thing depresses the mandible? (NOT opening, not lateral pterygoid)

A

1.GRAVITY ( and other small muscles)

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