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Human Reproduction

Question
CBSEENBI12002661
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In human adult females, oxytocin

  • is secreted by the anterior pituitary

  • stimulates the growth of mammary glands

  • stimulates pituitary to secrete vasopressin

  • causes strong uterine contractions during parturition

Solution

D.

causes strong uterine contractions during parturition

Oxytocin hormone is secreted from the posterior lobe of pituitary gland. It promotes contraction of the uterine muscle and myoepithelial cells of lactating breast, squeezing milk into the large ducts behind the nipple. Because of its role oxytocin is called birth hormone. 
The anterior lobe of pituitary gland secretes a somatotropic hormone, thyroid stimulating hormone, adrenocorticotropic hormone and gonadotropic hormones. 
The prolactin hormone or luteotropic hormone is secreted from the anterior lobe of pituitary gland. It activates the growth of breasts during pregnant and secretion of mammary glands after childbirth. 

Some More Questions From Human Reproduction Chapter

Primary spermatocyte produces 4 spermatozoa, but primary oocyte produces :

Ovulation takes place :

Which of the following shows hermaphroditism and self fertilization ?

The chromosone in primary spermatocyte are :

The male reproductive system is located in the body, in the :

Sertoli cells provide :

The middle piece of human sperm contains :

Seminiferous tubules open into vasa efferentia through :

Polar bodies are produced during the process :

In 28 days woman's menstrual cycle, ovulation occurs on :

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