What is the definition or description of: aldosterone?

Hormone: This is an adrenal produced hormone essential for preservation of sodium balance and potassium balance. If absent one would get hypotensive and volume depleted and potassium could rise dangerously and in excess it causes arterial hypertension and low potassium as well as long term damage to arteries and myocardium.

Hormone: Aldosterone is a steroid hormone (mineralocorticoid family) produced by the outer section (zona glomerulosa) of the adrenal cortex in the adrenal gland. It is involved in blood pressure regulation, potassium balance, and fluid balance.