Muscles of the Head, Face, Eye, and Neck

Frontailis

A: Wrinkles forehead and elevates eyebrows

Occipitalis

A: Retracts and tenses scalp

Temporalis

A: Elevates mandible

Orbicularis Oculi

A: Closes eye

Levator Labii Superioris

A: Elevates upper lip

Depressor Labii Inferioris

A: Depresses lower lip

Orbicularis Oris

A: Compresses and protrudes lips

Zygomaticus Major

A: Retracts and elevates upper lip

O: Zygomatic arch

I: Skin of upper lip

Zygomaticus Minor

A: Retracts and elevates upper lip

Triangularis

A: Depresses corner of mouth

Buccinator

A: Compresses corner of mouth

Risorius

A: Draws corner of mouth laterally

Mentalis

A: Elevates and protrudes lower lip and wrinkles skin of chin

Masseter

A: Elevates mandible

O: Zygomatic arch

I: Lateral surface and angle of mandibular ramus

Superior Rectus

A: Eyes look up

Inferior Rectus

A: Eyes look down

Medial Rectus

A: Eyes look medially

Lateral Rectus

A: Eyes look laterally

Superior Oblique

A: Eyes look down and laterally (tendon passes through trochlea and inserts on upper lateral side of eye)

Inferior Oblique

A: Eyes look up and laterally

Levator Palpebrae Superioris

A: Elevates upper eyelid

Platysma

A: Depresses mandible and tenses skin of neck

Sternocleidomastoid

A: Turns head to side, flexes neck

O: Sternum and clavicle

I: Mastoid region of temporal bone and superior nuchal line

Trapezius

A: Elevates scapula, hyperextends neck, braces shoulders

O: Occipital bone, 7th cervical and all thoracic vertebrae

I: Clavicle, spine and acromion process of scapula

Levator Scapulae

A: Elevates scapula

Sterno Hyoid

O: Clavicle and manubrium

I: Hyoid bone