KinX Learning

Digital Products in the Kinesiology of Exercise

The Semimembranosus and Semitendinosus Muscles

Posted by KinX Learning on July 07, 2016 . 0 Comments

The semimembranosus and semitendinosus muscles lie side by side on the inside back of the thigh. They are much thinner than the biceps femoris and have a unique relationship. The semimembranosus has a long upper tendon and a short lower tendon, and the semitendinosus has a short upper tendon and a long lower tendon. Because of this, the muscle masses of each of these muscles are in line with one another and form a cylindrical mass. Therefore, when well developed they appear as one long muscle.