Noradrenalin

Hormonal Balance: How to Lose Weight by Understanding Your Hormones and Metabolism by Scott Isaacs Dr. Bob's Guide to Balancing Female Hormones
Hormonal Balance: How to Lose Weight by Understanding Your Hormones and Metabolism by Scott Isaacs Dr. Bob's Guide to Balancing Female Hormones

Noradrenalin (also known as norepinephrine) is a hormone secreted by the adrenal medulla (an endocrine gland in the human body).

The effects of the hormone noradrenalin are similar to the effects of adrenalin - the other hormone secreted by the adrenal medulla.


The actions of noradrenalin include :

  • Constriction of small blood vessels leading to increase in blood pressure.
  • Increased blood flow through the coronary arteries and slowing of heart rate.
  • Increase in rate and depth of breathing.
  • Relaxation of the smooth muscle in the intestinal walls.

Increased amounts of both adrenalin and noradrenalin are secreted when the body is under stress.

 


See also: What is a Hormone ?

For further general information including the locations of the endocrine glands, see the Endocrine Glands of the Human Body.

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