-
biceps brachii
- origin-long head-superior margin of glenoid fossa, short head-coracoid process
- insertion-radial tuberosity of radius
- action-flexion and supination of forearm, flexion of arm
-
triceps brachii
- origin-inferior margin of glenoid cavity
- insertion-olecranon process of ulna
- action extension of forearm
-
extensor digitorum
- origin-lateral epicondyle of humerus
- insertion-extensor expansions of medial four digits
- action extension of wrist and fingers
-
sartorius
- origin-anterior superior iliac spine of ilium
- insertion-medial surface of tibia (near the knee joint)
- action flexion, abduction and lateral rotation of thigh. flexion of leg
-
gracilis
- origin-body and inferior ramus of pubic bone
- insertion-medial surface of tibia (near knee joint)
- action-adduction of thigh, flexion and medial rotation of leg
-
rectus femoris
- origin-anterior inferior iliac spine of ilium
- insertion-patella (by quadriceps tendon)
- action-extension of leg, flexion of thigh
-
vastus lateralis
- origin-greater trochanter and lateral lip of lenea aspera of femur
- insertion-patella (by quadriceps tendon)
- action-extension of leg
-
vastus medialis
- origin-intertrochanteric line and medial lip of linea aspera
- insertion-patella (by quadriceps tendon)
- action-extension of leg
-
biceps femoris
- origin-ischial tuberosity of ischium
- insertion-lateral side of head of fibula
- action-extension of thigh, flexion of leg
-
gastrocnemius
- origin-lateral condyle of femur
- insertion-calcaneus (by calcaneal/achilles tendon)
- action-plantar flexion of foot, flexion of leg
-
soleus
- origin-head and posterior surface of fibula, medial aspect of tibia
- insertion-calcaneus (by calcaneal/achilles tendon)
- action-plantar flexion of foot
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