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Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Sample Workout in the Target Heart Rate Range Sample Workout in the Target Heart Rate Range
The anterior pituitary gland and its target organs. The anterior pituitary gland and its target organs.
Interaction between a CD8+ T cell and its target. Interaction between a CD8+ T cell and its target.
Plasma insulin binds to receptors on target cells to enter the cells, which starts actions that lead ... Plasma insulin binds to receptors on target cells to enter the cells, which starts actions that lead ...
Enzymatic pathway for attachment of ubiquitin to target proteins Enzymatic pathway for attachment of ubiquitin to target proteins
Video: Hormonal regulation of blood pressure - RAA system

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