Lower Extremity Muscle Atlas
Michael L. Richardson, M.D.

Adductor Brevis
Adductor Longus
Adductor Magnus
Biceps Femoris-Long Head
Biceps Femoris-Short Head
Extensor Digitorum Longus
Flexor Digitorum Longus
Flexor Hallucis Longus
Gastrocnemius
Gluteus Maximus
Gluteus Medius
Gluteus Minimus
Gracilis
Iliopsoas
Obturator Externus
Obturator Internus
Pectineus
Peroneus Brevis
Peroneus Longus
Peroneus Tertius
Piriformis
Plantaris
Popliteus
Quadratus Femoris
Rectus Femoris
Sartorius
Semimembranosus
Semitendinosus
Soleus
Superior Gemellus
Tensor Fascia Lata
Tibialis Anterior
Tibialis Posterior
Vastus Intermedius
Vastus Lateralis
Vastus Medialis

Biceps Femoris - Long Head

Origin Long head from common tendon with semitendinosus from superior medial quadrant of the posterior portion of the ischial tuberosity; short head from lateral lip of linea aspera, lateral supracondylar ridge of femur, and lateral intermuscular septum of thigh Insertion Primarily on fibular head; also on lateral collateral ligament and lateral tibial condyle Action Flexes the knee, and also rotates the tibia laterally; long head also extends the hip joint Innervation Long head by tibial nerve; short head by common peroneal nerve Arterial Supply Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery link to: Biceps femoris - short head muscle The medical illustrations contained in this online atlas are copyrighted © 1997 by the University of Washington.