Question

In human adult females oxytocin:
A. Stimulates pituitary to secrete vasopressin.
B. causes strong uterine contractions during parturition.
C. is secreted by the anterior pituitary.
D. stimulates the growth of mammary glands.

Answer 1

Hint: Hormones are the chemical messengers which release from a different kind of gland and perform a different function like growth, metabolism, stimulation and much more activity. The master gland is the hypothalamus, which controls the overall activity of the body and control over other glands and their secretions.

Complete answer:
The female possesses, female sex hormones are progesterone and estrogen along with follicle-stimulating hormone and luteinizing hormone. Which are released after attaining puberty, that perfume different tasks during the reproductive life of females and their concentration varies.

> Oxytocin: It is a hormone which provides contraction with the uterus or in vaginal walls during labour period or delivery period that helps to expel out the fetus. It is secreted by the posterior lobe of the pituitary gland, which is known as neurohypophysis.

> Progesterone hormone: It is a female sex hormone which regulates the menstrual cycle and it plays a crucial role in the pregnancy and embryogenesis. It is secreted by the corpus luteum of the ovary and it stimulates the development of uterine epithelium and mammary gland. It is required during ovulation and placenta formation.

> Estrogen: It is secreted by the Graafian follicles and stimulates the development of secondary sexual character during puberty and maintains it throughout the reproductive life of females and it stimulates maturation of ovum.

Hence, the correct answer is option (B).

Note: The gonadotropic hormone such as FSH follicle-stimulating hormone, it stimulates the growth of ovarian follicle in female and spermatogenesis in male and luteinizing hormone, it stimulates the corpus luteum in female and Leydig’s cell in male. It secretes from the anterior lobe of the pituitary gland.