Calf Muscles: What Are They? Anatomy and Function

of the calf are the muscles of the posterior compartment of the leg that reside, precisely, at the level of the calf.
Although not a strictly anatomical term, the word "calf" refers to the characteristic protrusion located on the upper portion of the posterior surface of the leg, slightly lower than the back of the knee; simplifying, the calf is the obvious prominence found behind the leg, in the upper part of this.