The Human Body

Page Updated December 2024

Gray's Anatomy  An essential reference for the study of human biology. The Bartleby edition of Gray’s Anatomy of the Human Body features 1,247 vibrant engravings, as well as a subject index with 13,000 entries.

How Blood Works  Learn all about the amazing red fluid that keeps you alive!

How Cells Work  The human body is composed of about 10 trillion cells. Find out about enzymes, DNA, E. coli and what it all means to you.

How is Sex Determined?  The sex of an egg cell is set as soon as it is fertilized, but what happens to that cell and the cells it divides into to make a baby boy or a baby girl? Find out here. From NOVA.

How Muscles Work  Without our muscles, we couldn't walk or talk, and our blood would stop flowing. Learn about the different types of muscles in your body and what they do.

How Vision Works  A fascinating article that describes how your eyes and vision works!

How Your Brain Works  Welcome to your brain as only HowStuffWorks can explain it! Learn about this truly amazing organ.

How Your Kidneys Work  Your kidneys are two of the most important organs in your body. Learn how your kidneys work and how they affect your whole body on a daily basis.

How Your Lungs Work  We all breathe without really thinking about it -- it just happens naturally. Learn all about your lungs, various conditions and diseases, and what makes the breath of life so crucial!

Inside Cancer  View this new DNA Learning Center site for authoritative information on the biology of a cancer cell.

Map of the Heart  View the process blood goes through as it enters and exits the heart muscle.

Neuroscience for Kids Worksheets and Puzzles  This site contains worksheets, puzzles, games and lessons all based on neuroscience.

Starry Night - 12 Hours of Ambient Sleep Music  Ambient sleep music with a black screen ("Starry Night"), composed by Peder B. Helland.

The Brain vs. The Computer: Similarities and Differences  Throughout history, people have compared the brain to different inventions. These days, the favorite invention that the brain is compared to is a computer.