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(a) Where do the signals for parturition...

(a) Where do the signals for parturition originate from in humans?
(b) Why is it important to feed the newborn babies on colostrum?

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(a) Signals for parturition originate partly from placenta and partly from fully formed foetus. (b) Because colostrum is rich in proteins and calories, and also contains certain antibodies which provide passive immunity to the new born .
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State from where do the signals for parturition originate in human females.

The signals for parturition originate from the fully developed foetus only. (True/false)

(a) In which part of the human female reproductive system do the following events take place ? I-Release of 1st polar body II-Release of 2nd polar body III-Fertilisation IV-Implanatation (b) From where do signals for parturition originate and what does material pituitary release for stimulating uterine contrations for child birth ?

Read the following statement (a) Inhibitory proteins are released by epididymis which conserve energyof sperms. (b) Epididymis provides more ATP energy to sperms. (c ) The signals of parturition originate from placenta and CNS. (d) Lactational amenorrhea is used as contraception. How many of the above statement are correct ?

Read following statements (a-d) and choose the option with only correct statements. a. Parturition occurs due to a complex neuroendocrine mechanism at the end of gestation period. b. The signals for parturition originate from fully developed foetus and placenta which induces mild uterine contraction. c. Foetal ejection reflex triggers release of oxytocin from foetal pituitary. d. Oxytocin reduces uterine contraction under positive feedback control and causes expulsion of placenta followed by foetus known as parturition. a and b b and c c and d a and d

A : Corticotrophin releasing hormone is a a part of the clock that establishes the timing of birth . R : The signals for parturition originate from the fully developed foetus and placenta which induce mild uterine contractions called foetal ejection reflex .

(a) Differentiate between benign and malignant tumours. (b) Why is colostrum a boon to the newborn baby ?

(a) Differentiate between benign and malignant tumours. (b) Why is colostrum a boon to the newborn baby?

MODERN PUBLICATION-HUMAN REPRODUCTION-REVISION EXERCISES (SHORT ANSWER TYPE QUESTION (B)QUESTIONS FROM CBSE EXAMINATIONS)
  1. name the hormone responsible for the descent of testes into the...

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  2. Write two differences between spermtogenesis and oogenesis

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  3. Differentiate between morula and blastula of mammals.

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  4. Where are Leydig's cells located ? Name their hormonal secretions. Whi...

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  5. What structure forms the corpus luteum and at what stage ? Name...

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  6. Describe the functions of humans placenta .

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  7. Draw a diagrammatic sketch of the microscopic view of a mammalian sper...

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  8. Draw a labelled diagram of a part of T.S. through seminiferous tubule ...

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  9. Given below is an incomplete flow chart showing influence of hormones ...

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  10. Where are fimbrae present in human female reproducative system ?...

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  11. Name the muscular and glandular layers of human uterus. Which one of t...

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  12. Where are the Leydig cells present ? What is their role in reprodu...

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  13. Placenta acts as an endocrine tissue. Justify.

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  14. Differentiate between menarche and menopause.

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  15. Differentiate between major structural changes in the human ovary duri...

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  16. (a) Where do the signals for parturition originate from in humans? ...

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  17. When and where do chorionic villi appear in humans ? State their funct...

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  18. Explain the significance of meiocytes in a diploid organism.

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