The human body is the entire physical structure of a human organism. The human body consists of a head, neck, torso, two arms and two legs. The average height of an adult human is about 1.6 m (5 to 6 feet) tall. This size is largely determined by genes. Body type and body composition are influenced by postnatal factors such as diet and exercise.
The human body is often called a "body". The body of a dead person is called a "corpse" or "cadaver".
The human body consists of systems, organs, tissues and cells. Human anatomy studies structures and systems of the human body. The study of the workings of the human body is called physiology. Ecology focuses on the distribution and abundance of the bodies and how the distribution and abundance are affected by interactions between bodies and its environment.