Regulation of blood pressure: nervous control

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  • Created by: Amy
  • Created on: 16-03-17 11:33

1. The short term control of blood pressure is achieved by both the cardiac centre and vasomotor centre located in the medulla part of the brain stem. These are the controllors - what are the effectors that they interact with?

  • Myocardial cells and endothelium in arterioles
  • Sinoatrial node and smooth muscle in arterioles
  • Baroreceptors and chemoreceptors
  • Adrenaline and acetylcholine receptors
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Other questions in this quiz

2. If blood pressure rises, which of the following would result in a drop in blood pressure?

  • Inhibition of the sympathetic nervous system and excitation of the parasympathetic nervous system
  • Excitation of the sympathetic nervous system and inhibition of the parasympathetic nervous system
  • Excitation of the sympathetic nervous system and excitation of the parasympathetic nervous system
  • Excitation of the somatic nervous system and inhibition of the autonomic nervous system

3. Which of the following would increase arterial blood pressure?

  • Contraction of smooth muscle in veins
  • Contraction of smooth muscles in arterioles
  • Relaxation of smooth muscle in arterioles
  • None of the above

4. Which of the following best defines blood pressure?

  • The force exerted by blood on the inner walls of blood vessels
  • The force exerted by blood on the inner walls of the ventricles
  • The force exerted by blood on the middle walls of blood vessels
  • The force exerted by blood on the outer walls of blood vessels

5. The cardiac output (litres per min) of an adult at rest whose heart rate is 70 bpm and whos stroke volume is 70ml of blood would be:

  • 4.9 litres per minute
  • 49ml per minute
  • 49 litres per minute
  • 140 ml per minute

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