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When the heart beats faster, blood vessels need to what more.
When the heart beats faster, blood vessels need to dilate more.
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Asked 5/27/2014 11:14:14 AM
Updated 4/25/2018 6:04:57 PM
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When the heart beats faster, blood vessels need to dilate more.
Added 4/25/2018 6:56:54 AM
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When the heart beats faster, blood vessels need to open more.
Added 4/25/2018 6:04:57 PM
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