There are more nerve cells in one human brain than there are stars in the Milky Way.
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
A human pedigree containing inbreeding.
18 weeks old human fetus
The Human Eye
Systems of the Human Body
Mosaic X Chromosome Expression in Human Females
The traditional human karyotypes derived from a normal female and a normal male