Q:

Which of the following would cause a rise in mean arterial blood pressure?

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Which of the following would cause a rise in mean arterial blood pressure?


  1. sympathetic impulses along the cardio-accelerator nerves.
  2. changing from a standing position to a supine position.
  3. generalized vasodilation of blood vessels.
  4. a severe haemorrhage.

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A: Sympathetic stimulation increases heart rate and contractility which increases cardiac output which increases BP. The term cardio-accelerator nerve should provide a clue

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