Cranial, Axial, and Shoulder Muscles: Lab 7

Zygomaticus minor

• Opens mouth

• Controls corner of the mouth

• Elevates upper lips

• Smiling

What is action ?

• Stationary end

• Movement it causes (at joint)

• Movable end

What is c?

• Inferior oblique

• Inferior rectus

• Lateral rectus

A is?

• Lateral recutus

• Lateral oblique

• Medial rectus

• Inferior rectus

ObicularIs oris

• Pulls eyebrows down

• Flares nose

• Shapes lip for speech

• Pout

Obicularis oculi

• Smiling

• Elevates upper lip

• Closes eyes

• Flares nostrils

Synergists?

• Prime mover- muscles that brings about action

• Muscles working together to assist or stabilize

• Opposes specific action

What does frontalis?

• Furrow brows

• Chewing

• Close eyes

• Pulls central eyebrows down

What does temporalis do?

• Pout

• Chewing

• Open mouth

• Lowers the lip

Antagonist?

• Prime mover- muscle that brings about action

• Opposes specific action

• Muscles working together to assist or stabilize