Which of the following hormones regulates the reabsorption of $Na^+$ and the excretion of $K^+$?

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

What is the function of the hormone $Adrenaline$?

Which of the following is an emergency hormone?

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.

The class of adrenal gland hormones which are related to alertness,piloerection,and increased glucose levels in the blood is: