NCIt definition : A group of muscles including the biceps femoris, semimembranosus and semitendinosus
that extend down the back of the thigh.;
Alternative definition : CDISC: A group of three muscles in the lower extremity, the biceps femoris, semimembranosus
muscle and semitendinosus muscle; primary function is to extend the hip when the trunk
is fixed and flex the knee, and medially rotate the lower leg when the knee is bent.;