a832bfaa___The_Free_Information_Society__Element
[Percentage of Body Weight] 65% [Usage] This element is obviously the most important element in the human body. Oxygen atoms are present in water, which is the compound most common in the body, and other compounds that make up tissues. It is also found in the blood and lungs due to respiration. [Element] 
Oxygen
Elements in the Human Body - The Free Information Society
Element