Semitendinosus muscle

The semitendinosus (Latin for " semitendinosus muscle " ) is one of the posterior skeletal muscles of the thigh. Occasionally shares a sloping intermediate tendon of the muscle belly.

Function

The semitendinosus extends the hip joint. In addition, he bends, like all muscles of the so-called hamstrings muscles ( including not only the semitendinosus, the Mm. Biceps femoris and semimembranosus ) the knee joint. However, it rotates this, unlike the musculus biceps femoris, the leg inwardly. In non-guided movements so there is appropriate coordination of all three muscles is required when the lower leg in flexion in the sagittal plane is to be held, that is, not in a simultaneous external or internal rotation is to expire.

An involvement of the musculus semitendinosus (and the other two muscles of the hamstrings muscles, Mm. Biceps femoris caput longum and semimembranosus ) is to extend the knee joint of the people under the concept of Lombard 's paradox known.

The semitendinosus in animals

For animals for slaughter the muscle is part of the lower shell.