Exercise 14

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Masseter and temporalis

Name two muscles that close the jaw

Temporalis fossa

What muscles originates on the temporal fossa?

Skin of eyelid

Where does the orbicularis oculi insert?

Mastoid process

Where does the sternocleidomastoid muscle insert?

Orbicularis oculi

Name a muscle that closes the eye

Abducts corner of the mouth

What is the action of the risorius?

Rotates, extends, flexes the neck

What is the action of the sternocleidomastoid?

Coronoid process

What is the insertion of the temporalis?

Zygomatic Arch

What is the origin of the masseter muscle?

Sphincter

What kind of muscle is the orbicularis oculi or orbicularis oris muscle in terms of action?

Orbicularis oris

What muscle closes the lips?

Temporalis

What muscle is a synergist with the masseter?


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