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The Human Body

The human body is amazing.  Scientist are continuing to discover more about this complex organism.

  • The brain of an adult human weighs around 3 pounds. This is just 2% of the body’s weight, but it requires approximately 20% of the body’s total energy demands.
  • If all the blood vessels were lined up end to end, the total length would be approximately 25,000 miles

Listed on this page are some videos that will help you learn more about the amazing human body.


The Cell


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Chromosomes, chromatids, chromatin, etc.

Cellular respiration

Cell division

Heredity and genetics

Human anatomy & physiology

Human biology