Week 7 Muscles - Posterior Thigh (Hamstrings)

Semitendinosus origin

ischial tuberosity

Semitendinosus insertion

pes anserinus(superiro part of medial surface of tibia)

Semitendinosus innervation

tibial division of sciatic nerve (L5-S2)

Semitendinosus blood supply

deep femoral artery

Semitendinosus action

hip extension, knee flexion, medial rotation when knee is flexed, extend pelvis on the femur when feet are on the ground

Semitendinosus purposeful activity

acceleration with walking

Semimembranosus origin

ischial tuberosity

Semimembranosus insertion

posterior part of medial tibial condyle

Semimembranosus innervation

tibial division of sciatic nerve (L5, S1, S2)

Semimembranosus blood supply

deep femoral artery

Semimembranosus action

hip extension, knee flexion, medial rotation when knee is flexed, extend pelvis on the femur when feet are on the ground

Semimembranosus purposeful activity

acceleration with walking

Biceps Femoris(long head) origin

ischial tuberosity

Biceps Femoris(long head) insertion

lateral side of fibular head; tendon is split at this site by fibular collateral ligament of knee

Biceps Femoris(long head) innervation

tibial division of sciatic nerve

Biceps Femoris(long head) blood supply

deep femoral nerve

Biceps Femoris(long head) action

hip extension, knee flexion, lateral rotation when knee is flexed, extend the pelvis on the femur when feet are on the ground

Biceps Femoris(long head) purposeful activity

acceleration with walking

Biceps Femoris(short head) origin

linea aspera and lateral supracondylar line of femur

Biceps Femoris(short head) insertion

lateral side of fibular head; tendon is split at this site by fibular collateral ligament of knee

Biceps Femoris(short head) innervation

common fibular division of sciatic nerve (L5, S1, S2)

Biceps Femoris(short head) blood supply

deep femoral artery

Biceps Femoris(short head) action

knee flexion, lateral rotation when knee is flexed

Biceps Femoris(short head) purposeful activity

acceleration with walking