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The human body is the entire physical hey 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.
By the time the human reaches adult-hood, the body consists of close to 100 trillion cells. Each is part of an organ system designed to perform essential life functions. The body's organ systems include: the circulatory system, immune system, respiratory system, digestive system, excretory system, urinary system, musculoskeletal system, nervous system, endocrine system and the male and / or female reproductive system.
The human body is often called a "body". The body of a dead person is called a "corpse" or "cadaver".
Additional recommended knowledge
Physiology studies the workings of the human body. Human anatomy studies structures and systems of the human body. 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.
Social sciences, Humanities
Social sciences focus on social aspects of human body. Many people, consciously or unconsciously, send and receive non-verbal signals all the time. Body language forms part of paralanguage.
Human body is also an important theme for drawing and painting.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Human_body". A list of authors is available in Wikipedia.