Adrenalin (also
known as epinephrine) is a hormone secreted by
the Adrenal
Medulla (an endocrine gland in the human
body).
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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 : |
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Action
of heart increased.
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Rate
and depth of breathing increased.
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Metabolic
rate increased.
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Force
of muscular contraction improves.
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Onset
of muscular fatigue delayed.
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Blood
supply to the bladder and intestines reduced, their muscular
walls relax, the sphincters contract.
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Increased amounts of both adrenalin and noradrenalin are secreted when
the body is under stress. For further general/summary information (excellent for revision !) visit
the page about
Endocrine
Glands of the Human Body. |
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