Semitendinosus Muscle
Semitendinosus Muscle is a muscle of Posterior Compartment of the Thigh (Hamstring Muscle). It is more slender than the Semimembranosus Muscle.
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Terms
Soleus Muscle Gastrocnemius Muscle Adductor Muscle Semitendinosus Muscle Biceps Femoris Muscle Iliotibial Tract Gluteus Medius Muscle Gluteus Maximus Muscle Peroneus Longus Muscle Extensor Digitorum Longus Muscle Tibialis Anterior Muscle Pectineus Muscle Vastus Lateralis Muscle Vastus Medialis Muscle Rectus Femoris Muscle Sartorius Muscle Gracilis Muscle Adductor Longus Muscle
Semitendinosus Muscle
STRUCTURE AND POSITION
- Semitendinosus Muscle is a long, slender muscle of the Back of the Thigh.
- Semitendinosus Muscle has a long tendinous Insertion hence named so.
ATTACHMENTS
- Origin : Semitendinosus Muscle has a common origin with the Biceps Femoris via Tendon. It arises from the medial aspect of the Superior Part of the Ischial Tuberosity.
- It runs downwards alongside other Hamstring Muscles.
- Insertion : Semitendinosus Muscle gets inserted into the Medial Shaft of the Tibia just below the Medial Condyle.
BLOOD SUPPLY
Semitendinosus Muscle is supplied by the Inferior Gluteal, Deep Femoral, and Popliteal Arteries.
NERVE SUPPLY
Semitendinosus Muscle is innervated by the Tibial Nerve.
ACTION
- Semitendinosus Muscle extends the Hip Joint.
- It also flexes the Knee joint.
- Semitendinosus Muscle medially rotates the knee if its in semiflexed position.
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