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Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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There are 20 feet of blood vessels in each square inch of human skin.

Mechanoreceptors in the lateral line system that detect changes in water movement. Mechanoreceptors in the lateral line system that detect changes in water movement.
Bone joints Bone joints
The heat range of a spark plug is determined by the distance the heat has to flow from the tip to ... The heat range of a spark plug is determined by the distance the heat has to flow from the tip to ...
Long-range forecasts Long-range forecasts
Three types of “end feel” in normal joints. Three types of “end feel” in normal joints.
Ciliary movement Ciliary movement
Video: Electrical changes in the heart

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