1E-MASTICA

Question 1

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

Answer 1

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

Question 2

Which muscle is the most powerful jaw elevator?

Answer 2

the Masseter

Question 3

Which muscle OPENS the mouth?

Answer 3

Lateral Pterygoid

Question 4

What is the goal of mastication?

Answer 4

to make a BOLUS!

Question 5

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

Answer 5

A “looping” pattern

Question 6

The _______ and ________ move in coordination with jaw movements.

Answer 6

tongue and hyoid bone

Question 7

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

Answer 7

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

Question 8

What 2 musles protrude the mandible?

Answer 8

Lateral Pterygoid, some medial pterygoid

Question 9

What 2 muscles retract the mandible?

Answer 9

Temporalis (posterior), masseter(deep)

Question 10

What 3 muscles elevate the mandible?

Answer 10

Temporalis, Masseter, Medial Pterygoid

Question 11

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

Answer 11

1.GRAVITY ( and other small muscles)