Position And Actions Of The Upper Arm Muscles
| Muscle Name | Location | Action |
| Coracobrachialis | Anterior aspect deep to biceps (top of humerus) | Flexes and adducts humerus |
| Biceps | Anterior aspect | Flexes elbow and supinates forearm |
| Brachialis | Anterior aspect deep to biceps (distal end of humerus) | Flexes elbow joint |
| Triceps | Posterior aspect | Extends elbow |
Position And Actions Of The Lower Arm And Hand Muscles
| Muscle Name | Location | Action |
| Brachioradialis | Connects the humerous to the radius. | Flexes the forearm at the elbow |
| Flexor carpi radialis | Extends along the radial side of the anterior of the forearm, from the medial end of the humerus to the radial side of the forearm and the base of the second and third metacarpals. | Flexion of the wrist |
| Flexor carpi ulnaris | Extends along the ulnar side of the anterior of the forearm, from the medial end of the humerus to the pisiform and hamate carpal bones and the base of the fifth metacarpal. | Flexion of the wrist |
| Extensor carpi radialis | Extends along the radial side of the posterior of the forearm, from above the lateral end of the humerus to the posterior of the base of the second metacarpal. | Extension of the wrist |
| Extensor carpi ulnaris | Extends along the ulnar side of the posterior of the forearm, from above the lateral end of the humerus to the ulna and the posterior side of the base of the fifth metacarpal. | Extension of the wrist |
| Extensor digitorum | Extends along the lateral side of the posterior of the forearm, from the lateral end of the humerus to the second and fifth phalanges. | Extension of the fingers and wrist |
| Thenar eminence (abductor pollicis brevis, flexor pollicis brevis, opponens pollicis) | Soft tissue on the radial side of the palm. | Moves the thumb |
| Hypothernar eminence (abductor digiti minimi manus, flexor digiti minimi manus, opponens digiti minimi | Soft tissue on the ulnar side of the palm. | Moves the little finger and helps you to grip objects |
Position And Actions Of The Lower Leg And Foot Muscles
| Muscle Name | Location | Action |
| Tibialis anterior | Anterior aspect of the lower leg. | Dorsi flexes and inverts the foot. |
| Peroneus longus | Lateral aspect of the lower leg. | Plantar flexes the feet. |
| Extensor digitorum longus | Lateral side of the front of the lower leg. | Extends the second to fifth toes and dorsi flexes and eversion of the foot. |
| Extensor digitorum tendons | Tops of the toes. | Straightens the toes. |
| Gastrocenemius | A calf muscle which inserts through the Achilles tendon into the heel. | Plantar flexes the foot. |
| Soleus | Below the gastrocenemius and inserts through the Achilles tendon into the heel. | Plantar flexes the foot. |
| Achilles tendon | Attached to the soleus and gastrocenemius down to the heel. | Raises the foot. |
| Flexor digitorum tendons | Underneath the toes. | Bends the toes. |
| Flexor hallucis longus | From the distal two thirds of the posterior fibula to the plantar surface of the big toe. | Flexion of the big toe, plantar flexion and inversion of the foot. |
Position And Actions Of The Upper Leg Muscles (Anterior And Posterior)
| Muscle Name | Location | Action |
| Quadriceps extensor (quads) | Four muscles on the anterior side of the thigh | Extends the knee and flexes the hip |
| Sartorius | Crosses the anterior side of the thigh from the ilium to the tibia | Flexes the knee and hip, and rotates the thigh outwards |
| Adductors of the hip | These are four muscles on the medial aspect of the thigh. | Adduct and laterally rotates the thigh and flexes the hip. |
| Gracilis | Down the anterior medial side of the thigh from the pubic bone to the tibia | Adducts the thigh, flexes the knee and rotates the hip |
| Hamstrings | Three muscles on the back of the thigh | Flexes the knee and extends the hip |
| Tensor fascia lata | Down the side of the thigh from the ilium to the tibia | Abducts and flexes the thigh at the hip |