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Human Reproduction

Question
CBSEENBI12002948
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Which hormone is secreted in a woman if pregnancy has occurred?

  • Estrogen

  • Progesterone

  • Luteinizing hormone

  • Human chorionic gonadotropin

Solution

B.

Progesterone

If fertilization occurs and the foetus is implanted in the endometrium, the trophoblast cells of the developing placenta secrete a hormone called Human Crionic Gonadtrophic hormone (HCG). This hormone-like LH maintains the corpus luteum and secretion of progesterone and estradiol by it. These two hormones check the breakdown of the endometrium of the uterus. The absence of menstrual bleeding is the earliest sign of pregnancy.

Some More Questions From Human Reproduction Chapter

Seminiferous tubules open into vasa efferentia through :

Polar bodies are produced during the process :

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

Scrotum communicates with abdominal cavity through :

How many spermatozoa or sperms are present in human ejaculate ?

Acrosome is a part of:

Humans are :

Menstrual cycle occurs in :

Spermatozoa are produced in the .................. tubules of testes while ova are formed in the .................. of ovaries.

Corpus luteum secretes..................while Leydig cells secrete..................

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