Posterior Thigh Muscles Flashcards
Insertion of Semitendinosus
medial surface of superior part of tibia
Origin of Semitendinous, Semimembranosus
Ischial Tuberosity
Innervation of Semtendinosus and Semembranous
Tibial division of sciatic nerve (L5, S1, S2)
Action of Semitendinous and Semimembranosus
Extend hip joint, flex knee joint and rotate the leg medially when knee is flexed; when hip and knees are flexed it can extend trunk
Insertion of Semimembranosus
Posterior part of medial condyle of tibia, reflected attachment forms oblique popliteal ligament
Origin of Biceps Femoris Long Head
Ischial tuberosity
Origin of Biceps Femoris Short Head
Linea aspera and lateral supracondylar line of femur
Insertion of Biceps Femoris (Long and Short Head)
Lateral side of head of fibular tendon is split at the site by fibular collateral ligament of knee
Innervation of Biceps Femoris Short Head
Common fibular division of sciatic nerve (L5, S1, S2)
Innervation of Biceps Femoris long head
tibial division of sciatic nerve (L5, S1, S2)
Action of Biceps Femoris
Flexes knee joint and rotates it laterally when knee is flexed; extends hip joint