The disease characterized by extreme muscular weakness and brownish pigmentation of the buccal cavity and skin is:

Deficiency of which of the following causes obesity,low plasma $Na^+$,high $K^+$ and increased blood pressure?

Corticoids are the hormones,which are secreted by

Damage to the adrenal cortex will $NOT$ affect the secretion of which of the following?

$I.$ Increased alertness
$II.$ Pupillary dilation
$III.$ Raising of hairs
$IV.$ Sweating
All of the above written physiological processes are regulated by:

Assertion : Aldosterone is a steroid hormone and is important in the control of sodium and potassium ion concentration in mammals.
Reason : It upgrades sodium ion concentration in the $ECF$ by promoting reabsorption of sodium ions from renal tubules and excretion of potassium ions in urine.