★★★From a biological point of view, the human body is an infinitely complex marvel★★★ The human body is a large system of relationships and connections, which expresses the entire physical structure of a human being, made up of different types of cells which, when woven together, are in turn organized into systems of organs or apparatuses, i.e. a system in which all the various subsystems or apparatuses are in mutual interaction with each other to produce life, and for this physical point of view it is often seen as a complex system. The parts that compose it, suitable for maintaining its homeostasis and vitality, structure of the head, neck, trunk, ( consisting of chest and abdomen), arms, hands, legs and feet with related organs and systems. Often, the term "body" refers to both the human body when it is still alive and, by extension of the term, when it is dead, or rather when we speak of a corpse. Studied by health professionals, physiologists, anatomists and artists, before the human being reaches adulthood, the body consists of 100,000 billion cells and its study encompasses anatomy, physiology, histology and embryology.