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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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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

A Motor Protein Moves Microtubules in Cilia and Flagella A Motor Protein Moves Microtubules in Cilia and Flagella
Hydrocephalus. The figure on the left is a child with the enlarged ventricles of hydrocephalus. The Hydrocephalus. The figure on the left is a child with the enlarged ventricles of hydrocephalus. The
Adults in the Berlin Study of Aging show earlier declines on tests of nonverbal, fluid tasks (upper ... Adults in the Berlin Study of Aging show earlier declines on tests of nonverbal, fluid tasks (upper ...
Lymphatic massage techniques improve the circulation of lymph fluid. Lymphatic massage techniques improve the circulation of lymph fluid.
Sodium’s chief role is regulation of fluid balance Sodium’s chief role is regulation of fluid balance
Orientation and structure of a nephron, the functional unit of the kidney. Orientation and structure of a nephron, the functional unit of the kidney.
Video: Major Elements in Biological Molecules: Proteins

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