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
Anatomical theatre theatre; in Leiden, 17th-century depictions show that the living observers were actually accompanied in the rows by a large number of animal and human skeletons, some of which held banners with inscriptions such as "Memento mori", or, freely translated, "Remember, you will die". The first anatomical theatre was built at the University of Padua in 1594 and is still preserved. Other early examples include the Theatrum Anatomicum of Leiden University, built in 1596 and reconstructed in 1988, and the Anatomical Theatre of the Archiginnasio in Bologna (whose building dates from 1563 and the anatomical theatre from 1637). The anatomical theatre