Question

Posterior lobe of pituitary/neurohypophysis secretes two hormones

• A. Testosterone and androsterone
• B. Progesterone and estradiol
• C. Vasopressin and oxytocin
• D. Cortisone and cortisterone

Answer 1

The correct option is C Vasopressin and oxytocin

A. Testosterone is the male sex hormone secreted from testis and stimulates the development of secondary sexual characteristics in males.

Androsterone is the inactive male sex hormone produced from the metabolism of testosterone. This hormone is present in urine.

B. 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.

Estradiol is a steroid hormone. It is a form of oestrogen which regulates the menstrual cycle in females.

C. Vasopressin or 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.

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.

D. Cortisone is a glucocorticoid secreted from adrenal cortex in response to stress.

Cortisterone is also a glucocorticoid secreted from adrenal cortex.

Hence, vasopressin and oxytocin are secreted from posterior lobe of pituitary or neurohypophysis.

So, the correct answer is 'Vasopressin and oxytocin'.