Blood pressure is 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.

Which gland secretes the life-saving hormone?

Study the given flow chart and identify $A, B, C, D$ and $E$.

What does norepinephrine increase?

$A$ frightened resident living on the seventh floor of a high-rise building quickly runs down the stairs after feeling earthquake tremors. Which hormone is responsible for initiating this action?