The valves located in the heart are important because they:

A. regulate the speed of blood flow.
B. prevent blood from flowing backwards.
C. allow for good blood flow to the body.
D. form electrical conduction through the heart.

Answer: B

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Medications are absorbed at a faster rate when they are introduced:

A) into less perfused areas of the body. B) in highly vascular regions of the body. C) into the subcutaneous tissues of the body. D) into nerve endings of the body.

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Choanal polyp is reported with code _____.

Fill in the blank(s) with the appropriate word(s).

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