Nerve supply: Tibial part of the sciatic nerve Action: Chief flexor of knee Weak extensor of hip.

Biceps Femoris: The biceps femoris is a thigh muscle located in the posterior part of the thigh.
It follows the short saphenous vein into middle of calf and cleaves through the fascial roof of the fossa on reaching the popliteal fossa. Function Hip flexion.

Nerve Supply: Long Head – tibial branch of the sciatic nerve. Flexes the knee, and also rotates the tibia laterally; long head also extends the hip joint. Rectus Femoris acts with iliopsoas to produce hip flexion especially if the knee is flexed. Sensory innervation - the nerve divides into the tibial and fibula nerves where cutaneous fibres run. Common peroneal nerve (L5, S1, S2) Arterial Supply. Posterior cutaneous nerve of thigh goes superficially to long head of bicep femoris and downwards in the mid-section line on back of thigh deep to fascia lata.

The hamstrings receives the tibial compnent of the sciatic nerve EXCEPT for the short head of biceps femoris which is innervated by common fibular nerve What is the function of the hamstrings?

The fibers of the long head of the biceps femoris also aid in extension of the thigh. Short head:middle third of linea aspera, lateral supracondylar ridge of femur : INSERTION Styloid process of head of fibula. Rectus Femoris is innervated by the femoral nerve, originating from lumbar nerve 2, 3, and 4 nerve roots Bloody supply. … Route - the largest nerve in the body. Biceps Femoris is one of the three hamstring muscles found on the back of the thigh. Common peroneal nerve (L5, S1, S2) Arterial Supply.

Its branches supply the proximal part of the back of the leg and the skin on the back of the thigh. BICEPS FEMORIS. ORIGIN Long head: upper inner quadrant of posterior surface of ischial tuberosity. Its medial border forms the superolateral border of the popliteal fossa.. Summary Short Head – common peroneal nerve (both L5, S1, S2) Special Functions: Straightening the back from a bent position, controls the pelvis in standing, controls the knee as it swings forwards when walking. Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery. It has two parts, one of which the long head of the biceps femoris forms part of … Biceps Femoris In-Depth. Both heads are also supplied by the inferior gluteal artery as well as muscular branches of the popliteal artery.

Blood is supplied to the Rectus Femoris via descending branch of the lateral circumflex femoral (LCF) artery. Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery. Biceps Femoris In-Depth. Biceps Femoris is one of the three hamstring muscles found on the back of the thigh. lateral collateral ligament and lateral tibial condyle : ACTION Flexes and laterally rotates knee. The short head is supplied by the second or third perforating arteries of the profunda femoris. The functions of the biceps femoris are flexion and external rotation of the knee. Flexes the knee, and also rotates the tibia laterally; long head also extends the hip joint. The biceps femoris is one of the large muscles in the posterior compartment of the thigh and a component of the hamstrings.It has a long and a short head, each with different functions and innervation.

Nerve Supply: Long Head – tibial branch of the sciatic nerve. Motor innervation - biceps femoris, semintendinosus, semimembranosus. Sciatic Nerve. Short Head – common peroneal nerve (both L5, S1, S2) Special Functions: Straightening the back from a bent position, controls the pelvis in standing, controls the knee as it swings forwards when walking. The long head of the biceps femoris is innervated by the tibial nerve, but the short head is supplied by the common peroneal nerve. Nerve supply. Biceps Femoris - the long head is supplied by the first and second perforating arteries of the profunda femoris. … Origin - L6, L7, S1 and S2.