Adrenalin

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

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

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

Adrenalin prepares the body for "fright, fight or flight" responses and has many effects, including :


The actions of adrenalin include :

  • Action of heart increased.
  • Rate and depth of breathing increased.
  • Metabolic rate increased.
  • Force of muscular contraction improves.
  • Onset of muscular fatigue delayed.
  • Blood supply to the bladder and intestines reduced, their muscular walls relax, the sphincters contract.

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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