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Did you know?

The average adult has about 21 square feet of skin.

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Lateral View of the human brain in cross section Lateral View of the human brain in cross section
An EEG Recording of the Stages of Sleep An EEG Recording of the Stages of Sleep
Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery
Plot showing the number of genes on each human chromosome Plot showing the number of genes on each human chromosome
Vestibular apparatus inside a human ear Vestibular apparatus inside a human ear
Lobes of the brain, with primary receiving and integrating centers of the human cerebral cortex. Lobes of the brain, with primary receiving and integrating centers of the human cerebral cortex.
Video: Types of Shock (Part 2 of 2)

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