Question

Retention of sodium in body depends upon hormone from

• A. Adrenal cortex
• B. Adrenal medulla
• C. Parathyroid
• D. Thyroid

Answer 1

Answer: (A)

Adrenal cortex

Aldosterone is a steroid hormone (mineralocorticoid) produced by the outer section (zona glomerulosa) of the adrenal cortex in the adrenal gland. Aldosterone promotes sodium ($N{a}^{+}$) and water retention and lowers plasma potassium ($K^{+}$) concentration.