Question

Briefy discuss or describe the roles of adernalin in an emergency situation

Answer 1

Adrenaline or Epinephrine (Emergency hormone) :
This hormone is 80% part of the total hormones secreted by Adrenal medulla
This hormone prepares the body to face unavoidable emergency situations.
Functions of Adrenaline :
It constricts the blood vessels of skin (Vasoconstriction),
secrell
The hormone enhances the flow of blood by vasodilation of blood vessels of brain, heart, liver and skeletal
muscles.
Due to effect of this hormone, heart beat, blood pressure, BMR, amount of glucose in blood increases
REGULAR SECRETION OF
Hyposecretion :
Addison's disease :-Hyp
faster.
Adrenaline enhances the heart beat and thus increases cardiac output, due to this, circulation of blood becomes Hypersecretion:- :
metabolism causing acute u
The hormone stimulates the trachea and bronchi muscles to relax, as a result of it rate of breathing is increased)
Cushing's syndrome (di
So adrenaline hormone is used to cure asthma.
It dilates the pupils of eyes. Goose flesh is observed due to its effect. It constricts the erector pilli muscle of hair
and hair are raised and increases sweating by stimulating sweat glands.
(7)
The hormone stimulates contraction in spleen, as a result of it, spleen pours its stored blood into blood stream
This is situated in the ante
It checks the secretion of saliva and reduces the peristaltic movements in alimentary canal.
in origin.
Due to the effect of this hormone, clotting period of blood is reduced, the hormone also stimulates the uterus of remains in the form
Thymus gland is well dew
remains in the form of a
female animals to contract. l
Its structure is just like a
Adrenaline provides the body with an emergent chemical defence mechanism in stress conditions that threaten
lobes are divided into
the physical integrity and chemical consistency of the body e.g. accident, restlessness, fear anger, mental tension.
Each lobule has a dense
pain etc. It immediately prepares the body to face the emergency by a violent stress or alarm reaction.
The cortex consists of d
The cortisol hormone of adrenal cortex serves to maintain the body in living condition and recover it from the
The medulla consists o
severe effects of stress reactions. Thus, an increased output of cortisol is "life saving" in "shock conditions
thymic corpuscles.
So it is also known as life-saving hormone.

Answer 2

Adrenaline triggers the body's fight-or-flight response. This reaction causes air passages to dilate to provide the muscles with the oxygen they need to either fight danger or flee. Adrenaline also triggers the blood vessels to contract to re-direct blood toward major muscle groups, including the heart and lungs.