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Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

The skull of Sahelanthropus tchadensis is argued to be the earliest of the hominins and one of only The skull of Sahelanthropus tchadensis is argued to be the earliest of the hominins and one of only
Defense Mechanisms Cont. Defense Mechanisms Cont.
Defense Mechanisms Defense Mechanisms
Defense Mechanisms Defense Mechanisms
Neutral defense against stomach acid Neutral defense against stomach acid
Defense and counter defense. Defense and counter defense.
Video: Cardiac Cycle (Part 4 of 4)

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