Human body to comparative physiology and ecophysiology. Most recently, evolutionary physiology has become a distinct subdiscipline. Human body The human body is the structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems. They ensure homeostasis and the viability of the human body. It comprises a head, neck, trunk (which includes the thorax and abdomen), arms and hands, legs and feet. The study of the human body involves anatomy, physiology, histology and embryology. The body varies anatomically in known ways. Physiology focuses on the systems and organs of the human
Body Worlds legislation has been proposed and enacted in different American states. Most proposals concentrate on issues regarding the sale of human remains and the consent of the donors. National legislation on consent and tissue donation issues is expressed in the Uniform Anatomical Gift Act (2006) passed by the National Conference of Commissioners on Uniform State Laws which states that "an anatomical gift of a donor's body or part may be made during the life of the donor for the purpose of transplantation, therapy, research, or education" and prohibits trafficking in donated human organs for profit. In early 2008, former U.S. Republican