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Biology 24 Online
mmj:

How does the nervous system respond to low blood pressure? A.The nervous system signals smooth muscles in the blood vessels to contract to decrease blood pressure. B.The nervous system signals smooth muscles in the blood vessels to contract to increase blood pressure. C.The nervous system signals smooth muscles in the blood vessels to relax to decrease blood pressure. D.The nervous system signals smooth muscles in the blood vessels to relax to increase blood pressure.

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