Q:

Which three factors affect blood pressure?

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Which three factors affect blood pressure?


  1. heart rate, stroke volume and total peripheral resistance.
  2. cardiac output, heart rate and pulse pressure.
  3. total peripheral resistance, cardiac output and blood volume.
  4. diastolic pressure, systolic pressure and pulse pressure

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C: Blood pressure rises and falls as blood volume rises and falls. If volume does not change, then just cardiac output and total peripheral resistance determine BP. Choice A is correct for a constant blood volume. 

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