List the functions of hormones of adrenal medulla.

Explanation

Adrenal Medulla :
The adrenal medulla is composed of chromaffin cells. They are richly supplied with sympathetic and parasymopathetic nerves.
Hormones of adrenal medulla: It secretes two hormones namely
a. Epinephrine (Adrenaline)
b. Norepinephrine (Noradrenaline)
They are together called as "Emergency hormones". It is produced during conditions of stress and emotion. Hence it is also referred as "flight, fright and fight hormone".
Functions of adrenal medullary hormones :
(i) It promotes the conversion of glycogen to glucose in liver and muscles.
(ii) It increases heart beat and blood pressure.
(iii) It increases the rate of respiration by dilation of bronchi and trachea.
(iv) It causes dilation of the pupil in eye.
(v) It decreases blood flow through the skin.