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What is pregnancy hormone? Why is it so ...

What is pregnancy hormone? Why is it so called? Name two sources of this hormone in a human female.

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The chief pregnancy hormone is human chorionic gonadotropin (hCG) secreted by the placenta during pregnancy, hCG stimulates and maintains the corpus luteum to secrete progesterone until the end of pregnancy. Progestrone is necessary for continuation of the pregnancy as it maintains the endometrium of the uterus. These hormones (hCG and progesterone), associated with pregnancy are known as pregnancy hormone. Source of hCG - Placenta , source of Progesterone hormone-Placenta and Corpus luteum in ovary.
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OSWAAL PUBLICATION-HUMAN REPRODUCTION-TOPIC-2 (MENSTRUAL CYCLE,FERTILISATION AND PREGNANCY)(SHORT ANSWER TYPE QUESTIONS-I)
  1. Menstrual cycles are absent during pregnancy. Why?

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  2. Women experiences two major events in their life time one at menarche ...

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  3. Corpus luteum in pregnancy has a long life. However, if fertilisation ...

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  4. Placenta has endocrine function. Does it have other functions? Explain...

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  5. What are the events taking place in the ovary and uterus during follic...

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  6. Given below is a flow chart showing ovarian changes during menstrual c...

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  7. Differentiate between morula and blastocyst as stages in human embryon...

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  8. Name the hormone responsible for the descent of testes into the scrotu...

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  9. What is pregnancy hormone? Why is it so called? Name two sources of th...

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  10. (a) Name the foetal membrane that provides a fluid medium to the devel...

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  11. What structure forms the corpus luteum and at what stage? Name two hor...

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  12. Differentiate between the action of LH in males and females.

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  13. Mention the significance of fertilization.

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  14. What is fertilization membrane? How it is formed?

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  15. What is parturition ? Which hormones are involved in induction of part...

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  16. What is menstrual cycle? Which hormones regulate menstrual cycle?

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  17. Differentiate between menarche and menopause.

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  18. What is corpus luteum? Under what conditions does it undergo degenerat...

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  19. What is colostrum? How the milk production hormonally regulated?

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  20. What is placenta? Give its functions?

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