Frontalis

Elevates eyebrows
Wrinkles skin of forehead

Occipitalis

Pulls scalp posteriorly

Buccinator

Compresses the cheek

Orbicularis Oculi

Closes the eyes

Orbicularis Oris

Closes and protrudes the lip

Mentalis

Elevates and protrudes the lip

Platysma

Depresses lower lip

Tenses skin of neck

Zygomaticus Major

Pulls angle of mouth superiorly and laterally

Zygomaticus Minor

Elevates lateral portion of the lip

Temporalis

Retracts and elevates mandible

Masseter

Closes jaw

Elevates mandible

Splenius Capitus

Extends the neck

Sternocleidomasoid

Flexes Neck

Erector Spinae

Extends vertebral column

External Intercostals

Elevates rib cage

Internal intercostals

Depresses rib cage

Diaphragm

Expands thoracic cavity

Compresses abdominopelvic cavity

Rectus Abdominus

Compresses abdominal cavity

Flexes vertebral column

Internal Obliques

Flexes or bends spine

Compresses abdomen

External Obliques

Flexes or bends spine

Compresses abdomen

Depresses ribs

Transversus Abdominus

Compresses abdomen

Pectoralis Minor

Elevates ribs

Protracts and depresses scapula

Levator Scapulae

Rotates, elevates, and retracts scapula

Serratus Anterior

Protracts scapula

Superior rotation of scapula

Trapezius

Rotates scapula posteriorly

Retracts and depresses scapula

Subclavius

Protracts and depresses shoulder

Rhomboid Major

Adducts scapula

Performs downward rotations

Rhomboid Minor

Adducts scapula

Performs downward rotations