BIO 141 VINES: Quiz #14

What is the origin of the masseter muscle? Is the below answer correct? The superficial portion originates from the zygomatic process of the maxilla and the deep portion originates from the zygomatic arch.

yes

What is the insertion of the temporalis?

coronoid process and ramus of mandible

Where does the sternocleidomastoid muscle insert?

mastoid process of the temporal

What is the action of the risorius? Is the below answer correct? The risorius adducts the corners of the mouth.

no

Name a muscle that closes the eye.

obicularis oculi

What muscle closes the lips?

orbicularis oris

Where does the orbicularis oculi insert?

skin of the eyelids

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

sphincter

Name two muscles that close the jaw

Masseter and temporalis

Where is the origin of the levator scapulae muscle?

cervical vetebrae 1 through 4

What muscle originates on the temporal fossa?

temporalis fossa

What is the action of the sternocleidomastoid?

to abduct, rotate, and flex the head