Muscles of the leg, foot, forearm, and thigh

Tibialis anterior

Dorsiflexes foot at ankle and inverts (supinates) foot at intertarsal joints.

Extensor digitorum longus

Dorsiflexes foot at ankle joint and extends distal and middle phalanges of each toe at interphalangeal joints and proximal phalanx of each toe at metatarsophalangeal.

Fibularis (peroneus) longus

Plantarflexes foot at ankle and everts (pronates) foot at intertarsal joints.

Gastrocnemius

Plantarflexes foot at ankle joint and flexes leg at knee joint.

Soleus

Plantar flexes foot at ankle joint.

Flexor digitorum longus

Plantar flexes foot at ankle joint; flexes distal and middle phalanges of toes 2-5 at interphalangeal joints and proximal phalanx of toes 2-5 at metatarsophalangeal joint.

Flexor hallucis longus

Plantar flexes foot at ankle joint; flexes distal phalanx of great toe at interphalangeal joint and proximal phalanx of great toe at metatarsophalangeal joint

Brachioradialis

Flexes forearm at elbow joint most effectively when arm is mid-pronated.

Pronator teres

Pronates forearm at radioulnar joints and weakly flexes forearm at elbow joint.

Supinator

Supinates forearm at radioulnar joints.

Flexor carpi radialis

Flexes and abducts hand (radial deviation) at wrist joint.

Flexor carpi ulnaris

Flexes and adducts hand (ulnar deviation) at wrist joint.

Flexor digitorum superficialis

Flexes middle phalanx of each finger at proximal interphalangeal joint, proximal phalanx of each finger at metacarpophalangeal joint, and hand at wrist joint.

Extensor carpi ulnaris

Extends and adducts hand at wrist joint (ulnar deviation).

Extensor digitorum

Extends distal and middle phalanges of each finger at interphalangeal joints, proximal phalanx of each finger at metacarpophalangeal joint, and hand at wrist joint.

Extensor carpi radialis longus

Extends and abducts hand at wrist joint (ulnar deviation).

Extensor carpi radialis brevis

Extends and abducts hand at wrist joint.

Extensor digiti minimi

Extends proximal phalanx of little finger at metacarpophalangeal joint and hand at wrist joint.

Abductor pollicis longus

Abducts and extends thumb at carpometacarpal joint and abducts hand at wrist joint.

Extensor pollicis longus

Extends distal phalanx of thumb at interphalangeal joint, extends first metacarpal of thumb at carpometacarpal joint, and abducts hand at wrist joint.

Flexor pollicis longus

Flexes distal phalanx of thumb at interphalangeal joint.

Tensor fascia latae

Flexes and abducts hip joint.

Rectus femoris

Extends leg at knee joint and flexes thigh at hip joint.

Vastus lateralis

Extends leg at knee joint.

Vastus medialis

Extends leg at knee joint.

Vastus intermedius

Extends leg at knee joint.

Sartorius

Weakly flexes leg at knee; weakly flexes, abducts, and laterally rotates thigh at hip.

Pectineus

Flexes and adducts thigh at hip joint.

Adductor longus

Adducts and flexes thigh at hip joint and rotates thigh.

Adductor magnus

Adducts thigh at hip joint and rotates thigh; anterior part flexes thigh at hip joint, and posterior part extends thigh at hip joint.

Gracilis

Adducts thigh at hip joint, medially rotates thigh, and flexes leg at knee joint.

Gluteus maximus

Extends and laterally rotates hip joint.

Gluteus medius

Abducts and medially rotates hip joint.

Biceps femoris

Extends thigh at hip joint and flexes leg at knee joint.

Semitendinosus

Extends thigh at hip joint and flexes leg at knee joint.

Semimembranosus

Extends thigh at hip joint and flexes leg at knee joint.

Iliopsoas

Flexes thigh at hip rotates thigh laterally, flexes trunk on hip (as in sitting up from supine position).

Adductor brevis

Adducts and flexes thigh at hip joint and laterally rotates thigh.

Gluteus minimus

Abducts and medially rotates hip joint.

Piriformis

Laterally rotates and abducts hip joint.