Muscle function is shown by means of animation with commentary. Also in this chapter, a syntheses section permits rapid summarizing of all the muscles present in a determined anatomical region. The student can print the original version of the text, or can modify the text so as to adapt it to his needs and save it onto the hard disc. Plenty of space is dedicated to the exercises, which are of two types: multiple choice questions, and exercises suitable to verify knowledge of anatomical terms. At the end of the exercises, the user receives an evaluation of the extent of his knowledge. The whole work has been prepared in four languages (English, Italian, French and German), available contemporaneously, meaning the user can move easily from one language to another.