According to About.com, water makes up between 65 and 90 percent of all cells in the human body. The remaining elements by mass include oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, potassium, sulfur, chlorine, sodium, magnesium and trace amounts of iron, cobalt, copper, zinc, iodine, selenium and fluorine.Know More
The composition of the different elements within the body plays a role in the formation if different types of bodily materials, such as fats, protein and DNA. About.com explains that water, composed of two hydrogen atoms and a single oxygen atom, primarily derives its mass from the heavy oxygen molecule. This explains how the human body can simultaneously be mostly water and most densely oxygen. The human body, like all organic compounds, contains a significant amount of carbon. Oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus are the elements that make up 99 percent of the human body's mass.
Not all of the numerous other elements found in the human body actually play a significant role in human life. Oxygen and carbon are the most significant in terms of cellular activity, while some trace elements are believed to have little if anything to do with cellular function; however, as many as 12 trace elements are believed to play some role in overall health and well being.Learn more about Human Anatomy
Unlike other parts of the human body, the ears and nose continue to grow for a person's entire life. This is because the nose and ears contain cartilage, which never stops growing.Full Answer >
The mouth is considered the dirtiest place in the human body. It carries the largest amount of bacteria and germs.Full Answer >
The loin is located below the rib cage just below the pelvis on the human body, according to Reference.com. Commonly referred to as loins, the loin area of the human body refers specifically to the sides below the ribs that includes the human genitals.Full Answer >
Urea in the human body is produced in the liver, using its system of enzymes and carrier molecules to convert highly toxic ammonia and carbon dioxide into urea. This can then be safely removed from the body by the kidneys.Full Answer >