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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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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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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Salt glands as an adaptation for marine life. Salt glands as an adaptation for marine life.
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
Thyroid gland and parathyroid glands. Thyroid gland and parathyroid glands.
Major glands of the human endocrine system Major glands of the human endocrine system
Endocrine Organs and the Hormones They Secrete (2 of 2) Endocrine Organs and the Hormones They Secrete (2 of 2)
Thyroid hormone production—Relationship between pituitary and thyroid glands. Thyroid hormone ... Thyroid hormone production—Relationship between pituitary and thyroid glands. Thyroid hormone ...
Video: DNA close up Animation

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