Explain the functions of adrenomedullary hormones, Science

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Explain the Functions of adrenomedullary hormones

The functions of the adrenal medulla hormones - adrenaline and noradrenaline - are to:

  • Prepare the body to deal with the abnormal conditions, so that it responds to fear and excitement,
  • Dilate coronary arteries and increase the blood supply to the heart muscles,
  • Dilate the pupil of the eye and allow increased quantity of light to enter,
  • Increase the activity of the sweat glands,
  • Dilate the bronchi and allow greater amount of air to enter the lungs at each inspiration
  • Slow down peristalsis in the digestive tract and limit the flow of saliva,
  • Cause rapid breakdown of glycogen into glucose, thus ensuring sufficient glucose for sustained muscle contraction,
  • Cause intense vasoconstriction on the renal blood vessels and greatly decrease the output of urine, and
  • Contract the spleen thus increasing the volume of circulating blood.

 


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