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Did you know?

Your heart beats over 36 million times a year.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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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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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Comparative structure of arteries, capillaries, and veins. Comparative structure of arteries, capillaries, and veins.
Development of varicose veins. Development of varicose veins.
Cerebral aneurysm. A cerebral aneurysm is the abnormal dilation of arteries supplying the brain, whi Cerebral aneurysm. A cerebral aneurysm is the abnormal dilation of arteries supplying the brain, whi
Internal view of the heart with aorta, vena cava, and pulmonary arteries and veins. Internal view of the heart with aorta, vena cava, and pulmonary arteries and veins.
Varicose Veins Varicose Veins
Arteriogram of the left carotid artery and cerebral arteries. Arteriogram of the left carotid artery and cerebral arteries.
Video: Glycolysis - and oxygen

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