• Question: hi, can you explain to me how an arteriole can reduce blood flow into capillaries?

    Asked by Naznin on 25 Jun 2024.
    • Photo: Sinthu Thakur

      Sinthu Thakur answered on 25 Jun 2024:


      Hi, the constriction of arterioles increases resistance, which causes a decrease in blood flow to downstream capillaries and a larger decrease in blood pressure. Dilation of arterioles causes a decrease in resistance, increasing blood flow to downstream capillaries and a smaller decrease in blood pressure.

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