These elements reside in trillions of cells and non-cellular components of the body. The human body is composed of elements including hydrogen, oxygen, carbon, calcium and phosphorus. Trace elements are less than 1% combined (and each less than 0.1%). The body is studied by health professionals, physiologists, anatomists, and by artists to assist them in their work.Ĭomposition Elements of the human body by mass. Many systems and mechanisms interact in order to maintain homeostasis, with safe levels of substances such as sugar and oxygen in the blood. Physiology focuses on the systems and organs of the human body and their functions. The body varies anatomically in known ways. The study of the human body involves anatomy, physiology, histology and embryology. It comprises a head, neck, trunk (which includes the thorax and abdomen), arms and hands, legs and feet. They ensure homeostasis and the viability of the human body. It is composed of many different types of cells that together create tissues and subsequently organ systems. The human body is the structure of a human being. Naturally-occurring pubic, body, and facial hair has been deliberately removed to show anatomy Female (left) and male (right) adult human bodies photographed in ventral (above) and dorsal (below) perspectives.
