The human body is studied by three sciences - anatomy, physiology and hygiene. Anatomy studies the structure of the body. Physiology studies the functions of organs and the entire organism as a whole. Hygiene studies the conditions necessary to maintain and promote health. Among these three sciences, anatomy is traditionally considered the most difficult to understand in schools and in higher education institutions. There is an opinion that anatomy can only be mastered by cramming. Cramming, cramming and cramming again! No other way! In fact, this is not so. If we consider the human body as a single system, and not a set of separate organs, then it immediately becomes clear how logically it is structured. You don’t need to cram, but think - understand the purpose of each organ, see the relationship between organs and systems, etc. With this approach, you won’t have to cram anything.