Elements In The Human Body

Use the examples and proposed cases for making it. Describe the function of 10 elements in the human body:

1. Oxygen:

By mass, oxygen is the most abundant element in the human body. If you think about it, this makes sense, since most of the body consists of water or H2O. Oxygen accounts for 61-65% of the mass of the human body. Even though there are many more atoms of hydrogen in your body than oxygen, each oxygen atom is 16 times more massive than a hydrogen atom.

Uses

Oxygen is used for cellular respiration.

2. Carbon

All living organisms contain carbon, which forms the basis for all of the organic molecules in the body. Carbon is the second most abundant element in the human body, accounting for 18% of body weight.

Uses

All organic molecules (fats, proteins, carbohydrates, nucleic acids) contain carbon. Carbon also is found as carbon dioxide or CO2. You inhale air that contains about 20% oxygen. Air you exhale contains much less oxygen, but is rich in carbon dioxide.

3. Hydrogen

Hydrogen accounts for 10% of the mass of the human body.

Uses

Since around 60% of your body weight is water, much of the hydrogen exists in water, which functions to transport nutrients, remove wastes, lubricate organs and joints, and regulate body temperature. Hydrogen is also important in energy production and use. The H+ ion can be used as a hydrogen ion or proton pump to produce ATP and regulate numerous chemical reactions. All organic molecules contain hydrogen in addition to carbon.

4. Nitrogen

Approximately 3% of the mass of the human body is nitrogen.

Uses

Proteins, nucleic acids, and other organic molecules contain nitrogen. Nitrogen gas is found in the lungs, since the primary gas in air is nitrogen.

5. Calcium

Calcium is a metal. Calcium accounts for 1.5% of human body weight.

Uses

Calcium is used to give the skeletal system its rigidity and strength. Calcium is found in bones and teeth. The Ca2+ ion is important for muscle function.

6. Phosphorus

About 1.2% to 1.5% of your body consists of phosphorus.

Uses

Phosphorus is important for bone structure and is part of the primary energy molecule in the body, ATP or adenosine triphosphate. Most of the phosphorus in the body is in the bones and teeth.

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