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Signals for parturition originate from...

Signals for parturition originate from

A

both placenta as well as fully developed foetus

B

oxytocin released form maternal pituitary

C

placenta only

D

fully developed foetus only

Text Solution

Verified by Experts

The correct Answer is:
A
Pateruition in induced by complex neuroendocrine mechansim. These signlas originates from fully developed foetus and placenta. Which induced mild uuterine contaction colled foetal ejection reflex. This reflex triggers the release of oxytocin from the contraction, which inturn secretes more oxytocin.
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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 .

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

From a to d which of the following statements are correct ? (a) Fertilisation can occur only if the ovum and sperm are transported simultaneously to the ampullary isthmic junction (b) First movement of foetus and appearance of hair on head are usually observed during the fifth month of pregnancy . (c) On 14^(th) day of Menstrual cycle , the level of progesterone is maximum . (d) The signals for parturition originate from fully developed foetus and placenta

The signals for parturition orginate from:

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 ?

State from where do the signals for parturition originate in human females.

Read the following statements carefully and select the correct statements. (i) hPL plays a major role in parturition. (ii) Fetus shows movements first time in the 7^(th) months of pregenancy. (iii) Signal for parturition comes from fully developed fetus and placenta. (iv) Embryo's hearth is formed by the 3^(rd) month of pregency.

During parturition

Parturition occurs

ARIHANT NEET-HUMAN REPRODUCTION -MEDICAL ENTRANCES GALLERY (COLLECTION OF QUESTIONS ASKED IN NEET & VARIOUS MEDICAL ENTRANCE EXAMS)
  1. Withdrawal of which of the following hormones is the immediate cause o...

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  2. which one of the following statements is false in respect of viabil...

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  3. Signals for parturition originate from

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  4. In a normal pregnant woman, the amount of total gonadotropin activity ...

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  5. Uterine endometrium, uterine glands and connective tissue are broken d...

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  6. Sertoli cells are regulated by the pituitary hormone known as

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  7. Which of the following hormones is not a secretory product of human pl...

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  8. If for some reason, the vesa effeerentia in the human reproductive sys...

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  9. The testes in humans are situated outside the abdominal cavity inside ...

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  10. The main function of the fimbriae of the Fallopian tube in females is ...

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  11. At the time of implanation, the human embyro is called

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  12. Which of the following organs is devoid of glands?

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  13. Corpus luteum releases

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  14. Primary spermatocyte differs from spermatogonium in

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  15. In humans, cleavage divisions are

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  16. Number of autosomes in human primary spermatocyte is

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  17. Sperm acrosome is derived from

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  18. In human beings, normally in which one of the following, parts does th...

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  19. The best definition of the process of gastrulation is that it is a pro...

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  20. Sertoli cells are found in

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