Semitendinous muscle

Musculus semitendinosus

To extend the hip and hock joints, acting with the biceps and semimembranosus in propulsion of the trunk, rearing, etc.; also to flex the stifle and rotate the leg inward.

System
Muscle
Region
Pelvic limb
Sides
Right

Where it runs from and to

A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.

Origin
(1) The transverse processes of the first and second coccygeal vertebrae, the coccygeal fascia, and the intermuscular septum between this muscle and the biceps femoris; (2) the ventral surface of the tuber ischii.
Insertion
(1) The tibial crest; (2) the crural fascia and the tuber calcis.
Action
To extend the hip and hock joints, acting with the biceps and semimembranosus in propulsion of the trunk, rearing, etc.; also to flex the stifle and rotate the leg inward.
Nerve
The sciatic nerve, with the caudal gluteal nerve to its vertebral head.

Written for Vetomica in its own words from the standard reference anatomy of the horse; the books it was checked against are listed below.

Terminology

English
Semitendinous muscle
Latin (NAV)
Musculus semitendinosus
Status
A valid term in the Nomina Anatomica Veterinaria
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