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Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

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

Lymphatic vessels pick up excess tissue fluid, purify it in the lymph nodes, and then return it to t Lymphatic vessels pick up excess tissue fluid, purify it in the lymph nodes, and then return it to t
This pediatric growth chart tracks the height and weight for girls ages 2–20. This pediatric growth chart tracks the height and weight for girls ages 2–20.
The transition from college to first job can be a triggering situation for new growth in meaning ... The transition from college to first job can be a triggering situation for new growth in meaning ...
Labeled diagram and flowchart of the three muscle tissue types. Labeled diagram and flowchart of the three muscle tissue types.
Tissue Tissue
Cardiac Muscle Tissue Cardiac Muscle Tissue
Video: Congenital Heart Defects Animation

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