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