Main Model
25 Semitendinosus muscle
Semitendinosus
Proximal Attachment: Ischial tuberosity
Distal Attachment: Medial surface of superior part of tibia
Innervation: Tibial division of sciatic nerve part of tibia (L5, S1, S2)
Main Action(s): Extends thigh; flexes leg and rotates it medially when knee is flexed; when thigh and leg are flexed, these muscles (semitendinosus and semimembranosus) can extend trunk