Muscular System Review

Front

Close the jaw (chewing muscles)

Back

Masseter

Front

Flexes thigh on hip (crossing leg muscle)

Back

Sartorius

Front

Extends elbow

Back

Triceps brachii

Front

Raises the corner of the mouth (smiling muscle)

Back

Zygomasticus

Front

Flexes neck and rotates the head

Back

sternocleidomastoid

Front

Closes and protrudes lips (kissing muscle)

Back

orbicularis oris

Front

Raises the eyebrows

Back

frontalis

Front

bending a joint so the angle between the bones is decreased

Back

flexion

Front

straightening a joint so the angle between the bones is increased

Back

extension

Front

flexing the foot at the ankle, bending foot upward

Back

dorsiflexion