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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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There are more sensory neurons in the tongue than in any other part of the body.

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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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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

electron microscope image of a diatom electron microscope image of a diatom
Image of a flower petal. Image of a flower petal.
Image of an Almost-Extrasolar Planet Image of an Almost-Extrasolar Planet
Rotation sites for administering insulin. Rotation sites for administering insulin.
The experimental system that permits observation of rotation in the F1 component of F1F0 ATP (c) The experimental system that permits observation of rotation in the F1 component of F1F0 ATP (c)
Video: Mendel's Principles of Inheritance (Father of Genetics)

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