Body Composition | MCQs

Explanation

The human brain weighs approximately about 1.4 kilograms or 1400 in gram

and makes up about 2% of the human body weight.

The brain is divided into three regions -

Forebrain,

midbrain, 

hindbrain.

Explanation

Nitrogen makes up about 3% of the human body by mass.

It is mostly found in proteins, DNA, and RNA.

It is essential for building amino acids and nucleic acids in the body.

Explanation

6 Bio-Elements constituent 99% of the total human body

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6 Bio=Element are:

• Hydrogen
• Oxygen
• Carbon
• Nitrogen
• Calcium
• Phosphorus

Explanation

• Human tissue contains about 20% water in Nerve Cells
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• Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass
  
• Brain cells contain 85% water.
• In adult men, about 60% of their bodies are water

The organs in the human body with the highest percentages of water are the brain (80-85%),

• kidneys (80-85%),
• heart (75-80%),
• lungs (75-80%),
• liver (70-75%),
• muscles (70-75%),
• and skin (70-75%).