Muscles of Facial Expression

Smiling Muscles Frowning Muscles
Orbicularis Oculi: close eyelid
Nasalis: compress/dilate nasal openings
Levator Labii Superioris: raise upper lip
Levator Anguli Superioris: raise angle of mouth upward
Zygomaticus: draw angle of mouth upward
Risorius: draw angle of mouth laterally
Frontalis: elevate eyebrows
Orbicularis Oris: closes mouth
Depressor Anguli Oris: draw angle of mouth downward
Depressor Labii Inferioris: lowers lower lip
Mentalis: draws chin up
Platysma: draws lower lip down & back

Muscles of Mastication
Masseter: elevates mandible
Temporalis: elevates mandible
Medial Pterygoid: elevates mandible
Lateral Pterygoid: depresses mandible

Muscles that Move the Head
Sternocleidomastoid
Flexes head
Draws head to shoulder
Semispinalis Capitis
Extends head
Rotates head up
Splenius Capitis
Extends head
Rotates face to same side
Longissimus Capitis
Extends head
Rotates face to same side

Muscles of the Axial Skeleton
Intrinsic Muscles
Erector Spinae
Spinalis
Longissimus
Iliocostalis
Oblique Muscles
Semispinalis
Multifidus
Rotatores
Muscles of Quiet Respiration
Diaphragm
External Intercostals
Internal Intercostals
Abdominal Muscles
External Obliques
Internal Obliques
Transverse Abdominus
Rectus Abdominus
Quadratus Lumborum

Muscles of the Axial Skeleton

Muscles of the Axial Skeleton

Muscles of Scapular Stabilization
Trapezius
Retraction
Elevation
Depression
Upward Rotation
Rhomboid
Retraction
Levator Scapulae
Elevation
Pectoralis Major
Protraction
Serratus Anterior
Protraction

Rotator Cuff Muscles
Supraspinatus
Abduction
Infraspinatus
External Rotation
Teres Minor
External Rotation
Subscapularis
Internal Rotation

Muscles of Shoulder Joint
Deltoid
Flexion/Extension
Abduction/Adduction
Internal/External Rotation
Pectoralis Major
Adduction
Extension
Flexion
Internal Rotation
Biceps Brachii
Flexion

Muscles of Shoulder Joint
Teres Major
Adduction
Extension
Internal Rotation
Latissimus Dorsi
Adduction
Extension
Internal Rotation
Triceps Brachii
Adduction
Flexion

Muscles of the Elbow & Radioulnar Joints
Triceps Brachii
Extend elbow
Bicep Brachii (3,5)
Flex elbow
Supinate Forearm
Brachialis (4)
Flex elbow
Brachioradialis
Flex elbow
Pronate forearm
Pronator Teres (6)
Supinator Longus (7)

Muscles of the Forearm/Wrist/Hand
Pronator Teres
Supinator
Flexor Carpi Ulnaris
Flexor Carpi Radialis
Flexor Digitorum
Extensor Carpi Ulnaris
Extensor Carpi Radialis
Extensor Digitorum
Pronate forearm
Supinate forearm
Flex, abduct wrist
Flex, abduct wrist
Flex fingers
Extend wrist
Extend wrist
Extend fingers

Muscles of the Forearm/Wrist

Muscles of the Hip/Thigh
Gluteal Muscles:
Gluteus Maximus:hip extension
Gluteus Medius: hip abduction, internal rotation
Gluteus Minimus: hip abduction, internal rotation

Muscles of the Hip/Thigh
Adductor Muscles
Adductor Longus:
Adductor Magnus
Adductor Brevis
Gracilis

Muscles of the Hip/Thigh
Anterior Thigh
Sartorius: flexion/external rotation
Quadriceps Femoris: Knee Ext.
Rectus Femoris: hip flexion, knee extension
Vastus Lateralis
Vastus Medialis
Vastus Intermedius

Muscles of Hip/Thigh
Hamstrings
Semimembranosus
Semitendinosus
Biceps Femoris
Responsible for Hip Extension & Knee Flexion

Muscles of the Lower Leg: Ant.
Responsible for dorsiflexion of foot
Tibialis Anterior
Extensor Hallucis Longus
Extensor Digitorum Longus
Fibularis Longus*
Fibularis Brevis*
Fibularis Tertius