Question

Hormone controlling contraction of uterus during parturition is

• A. Luteinising hormone
• B. Estrogen
• C. Progesterone
• D. Oxytocin

Answer 1

The correct option is D Oxytocin

A. Luteinizing hormone or LH stimulates growth of ovarian follicles in females. In males this hormone is called interstitial cell stimulating hormone or ICSH and affects the Leydig cells of testes.

B. Estrogen is the female sex hormone secreted from ovarian follicles and stimulate the development of female secondary sex organs.

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. 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 'Oxytocin'.