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Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

he vertebrate stomach as an example of an organ composed of all four tissue types he vertebrate stomach as an example of an organ composed of all four tissue types
Skeletal Muscle Structures Skeletal Muscle Structures
Mucosa-associated lymphoid tissue (MALT), including tonsils, adenoids, and gut-associated lymphoid ... Mucosa-associated lymphoid tissue (MALT), including tonsils, adenoids, and gut-associated lymphoid ...
Thumb slides along the nose. Slide a thumb over the procerus muscle, then use both thumbs to slide ... Thumb slides along the nose. Slide a thumb over the procerus muscle, then use both thumbs to slide ...
Nerve meets muscle Nerve meets muscle
Production of ATP in Skeletal Muscle Production of ATP in Skeletal Muscle
Video: Phlebotomy

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