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Muscles - Leg
Muscles of the Leg
| Term | Definition |
|---|---|
| biceps femoris | origin: ischial tuberosity and linea aspera of femur |
| biceps femoris | insertion: head of fibula, lateral condyle of tibia |
| biceps femoris | action: flexion at knee, extension and lateral rotation at hip |
| semimembranosus | origin: ischial tuberosity |
| semimembranosus | insertion: posterior surface of medial condyle of tibia |
| semimembranosus | action: flexion at knee; extension and medial rotation at hip |
| semitendinosus | origin: ischial tuberosity |
| semitendinosus | insertion: proximal medial surface of tibia |
| semitendinosus | action: flexion at knee; extension and medial rotation at hip |
| sartorius | origin: anterior superior spine of ilium |
| sartorius | insertion: medial surface of tibia near tibial tuberosity |
| sartorius | action: flexion at knee; flexion and lateral rotation at hip |
| rectus femoris | origin: anterior inferior iliac spine and superior acetabular rim of ilium |
| rectus femoris | insertion: tibial tuberosity by way of patellar ligament |
| rectus femoris | action: extension at knee, flexion at hip |
| vastus intermedius | origin: anterior and lateral surface of femur along linea aspera |
| vastus intermedius | insertion: tibial tuberosity by way of patellar ligament |
| vastus intermedius | action: extension at knee |
| vastus lateralis | origin: anterior and inferior to greater trochanter of femur and long linea aspera |
| vastus lateralis | insertion: tibial tuberosity by way of patellar ligament |
| vastus lateralis | action: extension at knee |
| vastus medialis | origin: entire length of linea aspera of femur |
| vastus medialis | insertion: tibial tuberosity by way of patellar ligament |
| vastus medialis | action: extension at knee |