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A : Oxytocin acts on the uterine musc...

A : Oxytocin acts on the uterine muscles and cause stronger uterine contractions which in turn stimulates further secretion of oxytocin
R : Oxytocin is released form maternal pituitary

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark (2)

C

If Assertion is true statement but Reason is false then mark (3)

D

If both Assertion and Reason are false statement then Mark (4)

Text Solution

Verified by Experts

The correct Answer is:
B
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Which hormone acts on the uterine muscle and stronger uterine contractions.

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Given below are the steps involved in parturition. Arrange them in proper sequence and select the correct option. I. The induction of mild uterine contractions is called foetal ejection reflex. II. Stronger uterine contractions causing the further release of oxytocin. III. Origination of signals from the fully developed foetus and placenta. IV. Release of oxytocin from maternal pituitary V. Expulsion of baby from the birth canal

A : Synthesis of milk is stimulated by rise in the level of oxytocin R : Oxytocin is released from the adenohypophysis under influence of hypothalamus .

A: Oxytocin stimulates contraction-of uterine muscles during birth and initiates ejection of milk. R : It is synthesjzed in the posterior lobe of pituitary.

Read the following sentences and select the correct option with all true statements. i. During parturition , oxytocin induces intense contractions in the uterus. ii. After parturition oxytocin stimulates milk ejection. iii . The labour pain of during child-birth is due to oxytocin . iv. oxytocin is secreted from placenta and ovary .

AAKASH INSTITUTE-HUMAN REPRODUCTION-Assignment ( Section - D ) (Assertion - Reason Type Question ) (In the following question a statement of assertion (A) is followed by a statement of reason (R )
  1. A : The male urethra is longer than the female urethra R : I...

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  2. A : In human ovum is alecithal type. R : is is almost free of y...

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  3. A : Oxytocin acts on the uterine muscles and cause stronger uter...

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  4. A : in morula stage the cells divide without any increase in siz...

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  5. A : In frog gray cresent is formed during fertilization R : I...

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  6. A : If fertilization occurs the corpus luteum is rescued from r...

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  7. A : if both the ovaries are removed after the first trimester o...

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  8. A : placenta is connected to the embryo through an umbilical cor...

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  9. A : All copulations do not lead to fertilisation and pregnancy ....

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  10. A : Lack of menstruation may be indicative of pregnancy R : ...

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  11. A : LH acts on Sertolic cells for release of certain factors re...

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  12. A : The first sign of growing foetus may be noticed by listeni...

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  13. A: Leyding 's cells synthesise and secrete festicular hormones ca...

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  14. A : In spermatogenesis the first haploid forms are spermatids. R...

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  15. A : Presence or absence of hymen is not a reliable inducator of v...

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  16. A : After menopause the levels of blood gonadotropins will rise ...

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  17. A : The secretions of male accessory glands constitute the semi...

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  18. A : Corpus luteum begins to atrophy after a short life of 10 to ...

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  19. A : Most birds posses only the left ovary and left oviduct for...

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  20. A : The most immediate effect of FSH is the maturation of exis...

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