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| Muscle | Origin | Insertion | Action | Nerve | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| biceps femoris | long head: ischial tuberosity; short head: lateral lip of linea aspera | head of fibula (occasionally to lateral tibial condyle) | flexion at knee (both long & short head); extension of thigh at hip joint (long head); laterally rotation of leg when the knee is flexed | long head: sciatic nerve, tibial division (L5, S1, S2); short head: sciatic nerve, common peroneal division (S1, S2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| semimembranosus | ischial tuberosity | posterior medial aspect of medial tibial condyle | flexion of leg (at knee joint); extension of thigh (at hip joint); medial rotation of tibia (with knee flexed) | sciatic nerve, tibial division (L5, S1, S2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| semitendinosus | ischial tuberosity | proximal anteromedial tibia (pes anserine) | flexion of leg (at knee joint); extension of thigh (at hip joint); medial rotation of tibia (with knee flexed) | sciatic nerve, tibial division (L5, S1, S2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
(c)Dr. Nikita Vizniak. All Rights ReservedIn order to use these tables as a learning tool, you will need to have JavaScript enabled.
