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Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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Your heart beats over 36 million times a year.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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If you could remove all of your skin, it would weigh up to 5 pounds.

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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

The parathyroid glands. These four glands are located on the posterior side of the thyroid gland. Th The parathyroid glands. These four glands are located on the posterior side of the thyroid gland. Th
The sense of taste. Note: taste buds are located on the anterior and posterior portions of the ... The sense of taste. Note: taste buds are located on the anterior and posterior portions of the ...
Some vehicles use a surge tank, which is located at the highest level of the cooling system, with ... Some vehicles use a surge tank, which is located at the highest level of the cooling system, with ...
Most air filter housings are located on the side of the engine compartment and use flexible rubber ... Most air filter housings are located on the side of the engine compartment and use flexible rubber ...
Most catalytic converters are located as close to the exhaust manifold as possible as seen in this ... Most catalytic converters are located as close to the exhaust manifold as possible as seen in this ...
The limbic system is located within the higher brain, or cerebrum. The limbic system is located within the higher brain, or cerebrum.
Video: How Hemoglobin Picks Up and Delivers Oxygen

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