Question

Hormone controlling Na${}^{+}$ - K${}^{+}$ ion concentration is

• A. Aldosterone
• B. Antidiuretic hormone
• C. Progesterone
• D. Pitocin

Answer 1

The correct option is A Aldosterone

A. Aldosterone is a mineralocorticoid hormone secreted from the adrenal cortex. It maintains the electrolyte balance in the body by reducing the loss of sodium through urine and sweat. Hence, it controls Na⁺ - K⁺ ion concentration.

B. Anti diuretic hormone (ADH), is secreted from the posterior part of pituitary gland. This hormone increases reabsorption of water in kidneys and this results in decreased rate of urine production.

C. Progesterone is a steroid female sex hormone which is also known as pregnancy hormone. It maintains the inner lining of uterus which aids in implantation of embryo in the uterus.

D. Pitocin is synthetic form of oxytocin. Oxytocin is secreted from the posterior pituitary and helps in the contraction of uterus during childbirth and also stimulates release of milk from mammary glands i.e. lactation.

So, the correct answer is 'Aldosterone'.