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Question

Give the functions of adrenaline in points. (6marks)


Solution

  1. Acceleration of metabolism.
  2. Increase in blood sugar levels.
  3. Increase in heart rate as well as vasoconstriction(see the last point)..
  4. Activation of RAS system, thus lead to arousal,anxiety and coarse tremors of extremities.
  5. Relaxation of the wall of GIT. and contraction of sphincters, so net result is constipation.
  6. Piloerection.(goosebumps).
  7. Increases blood supply to muscle.
  8. Dilation of pupil and relaxation of ciliary muscles.
  9. Bronchodilation, increase in rate and force of respiration.
  10. Increases RBC count by contraction of spleen.
  11. Increases plasma protein concentration by movement of fluid out of circulation.
  12. On cardiovascular system: Increase in heart rate, cardiac output,systolic blood pressure. Decrease in peripheral resistance,diastolic blood pressure,mean arterial blood pressure.

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