Angiotensin is derived from plasma protein "angiotensinogen'' by the action of renin and other nervous stimuli. Angiotensin stimulates the following

The gland which acts to resist stress

State the function of aldosterone.

$I.$ Increased alertness    $II.$ Pupillary dilation    $III.$ Raising of hairs    $IV.$ Sweating

All of the above written physiological processes are regulated by

Describe hormones of adrenal gland, functions and disorders due to its deficiency.