<prompt> Biceps femoris does which of the following function?Adduction of kneeFlexion of kneeExtension of kneeAbduction of knee  <response>: Ans. B Flexion of kneeRef: Netters Clinical Anatomy, 3rd ed. pg. 288 1 Biceps femoris is present in posterior compartment ofr thigh and forms hamstrings. It is responsible for flexion of knee. The other hamstrings are semitendinosus and semimembranosus. All these muscles originate from the ischial tuberosity and are innervated by tibial part of sciatic nerve L5, S1 and S2. 