Chapter 2 : Muscles Flashcards

1
Q

Name the 3 muscles of mastication ?

A

Masseter
Temporalis
Buccinator

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2
Q

State the action of the risorious muscle

A

Aids in facial expression by pulling the corner of the mouth laterally via its contraction ( inward and outward )

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3
Q

What is the action of the platysma ?

A

Can produce an expression of sadness surprise and horror by lowering the corners of the mouth and lower lip

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4
Q

Where are the corrugator muscles and what are there action ?

A

Deep to the medial end of each eyebrow - contracts to draw the two eyebrows together medially and inferiorly

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5
Q

State the position of the mentalis

A

Paired central muscle of the lower lip situated at the top of the chin

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6
Q

Where are the sterno cleido mastoid muscles found

A

Travels obliquely across the side of the neck

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7
Q

What are the deltoids

A

Shoulder muscles that draw the arm backwards , forwards , rotates and abducts

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