lab #7

action; raises the eyebrows

• frontalis ( 1 )

• orbicularis oculi ( 2 )

• Orbicularis fris ( 1 )

• Risorius ( 2 )

action; pulls scalp posteriorly

• Oribularis Oculi ( 2 )

• Orbicularis Oris ( 1 )

• Occipitalis ( 1 )

action; closes the eye

• risorius ( 1 )

• platysma ( 1 )

• zymoaticus

• orbicularis oculi ( 2 )

action; closes & protrudes lips

• zygomaticus

• platysma

• risorius

• orbicularis oris ( 1 )

action; draws corner of lip laterally

• risorius ( 2 )

• zygomatics

• platysma

• masseler

action; raises lateral corners of mouth ( smiling muscle )

• zygomaticus ( minor & major )

• platysma

• temporalis

• buccinator

action; tenses skin of neck.

• masseter

• temporalis

• platysma

• buccinator

action; primary closer of jaw ( elevates mandible )

• masseter

• temporalis

• buccinator

action; close jaw ( elevate mandible )

• buccinator

• temporalis

• sternocleidomastoid

• rectus abdominis

action; compress cheek

• buccinator

• sternocleidomastoid

• splenius group

• spinals group