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How is placenta formed?...

How is placenta formed?

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Chorion of the blastocyst gives rise finger-like outgrowths, called chorionic villi, which fit into depressions, called crypts, of the uterine mucosa. Finally these become more intimated due to dissolution of some of the intervening layers and form a true placenta.
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MODERN PUBLICATION-HUMAN REPRODUCTION-REVISION EXERCISES (SHORT ANSWER TYPE QUESTION (A)QUESTIONS FROM STATE BOARD EXAMINATIONS)
  1. If corpus luteum becomes inactive, what will be its effect on embryo d...

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  2. Write any two differences between external fertilization and internal ...

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  3. How is placenta formed?

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  4. State any two differences between follicular phase and luteal phase of...

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  5. What do you mean by pregnancy?

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  6. What is parturition?

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  7. Where and how complete development and nutrition of embryo takes place...

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  8. List any four differences between sperm and ovum.

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  9. Draw a neat diagram of an oocyte and label. (i) Corona radiata (ii)...

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  10. Draw a well labelled diagram of human sperm.

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  11. what is parturition ? Which hormones are involved in induction of part...

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  12. Define placenta and give its significance in human female.

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  13. Why doctors recommend breast feeding during initial period of infant g...

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  14. (a) in which part of human female reproductive system, following event...

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  15. It is evident that it is the genetic make up of sperm that determines ...

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  16. Mother's milk is considered essential for new born infants. (a) Name t...

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  17. How is placenta formed?

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  18. What is menstrual cycle ? Name any two stages of menstrual cycle.

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  19. What is first milk which comes out from mother's mammary gland called ...

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  20. What is fallopian tube? Write its function.

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