WHAT IS THE LONG SINEW/MUSCLE THAT GOES BEHIND KNEE?
In response to “G had” above, the answers listing “biceps” are correct. Maybe you should look at an anatomy book. The biceps femoris, semimembranosus, and semintedinosus are the three muscles of the hamstrings, located in the back of the thigh. They originate at the hip and insert at the knee. The “biceps” you are thinking of is the biceps brachii in the arm. Know the subject you are commenting on before correcting someone who does.
