Composition of the human body

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Composition of the Human Body

The Composition of the Human Body refers to the set of substances, elements, and compounds that make up the human body and their respective proportions.

Pronunciation

  • /kəmˌpɒzɪʃən ɒv ðə ˈhjuːmən ˈbɒdi/

Etymology

The term is derived from the Latin compositio meaning "a putting together" and the Old English bodig meaning "a person's whole physical self".

Elements

The human body is composed of several elements. The most abundant of these are oxygen, carbon, hydrogen, and nitrogen, which account for 96% of the body's mass. Other elements, such as potassium, sulfur, sodium, chlorine, and phosphorus, make up the remaining 4%.

Compounds

These elements combine to form various compounds that are essential for life. These include water, proteins, lipids, carbohydrates, and nucleic acids.

Proportions

The proportions of these elements and compounds vary among individuals and can be influenced by factors such as age, sex, and overall health. However, on average, the human body is approximately 60% water, 16% protein, 16% fat, and 1% carbohydrate.

Related Terms

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