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Assertion: Parturition is induced by neu...

Assertion: Parturition is induced by neural signal in maternal pituitary.
Reason: At the end of gestation period, the maternal pituitary releases prolactin which causes uterine contractions.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true and R is not the correct explanation of A

C

A is true but R is false

D

A is False but R is true

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Given below are assertion and reason . Point out if both are true with reason being correct explanation (A). Both true but reason is not correct explanation (B), assertion true but reason is wrong (C ), both are wrong (D). Assertion: Parturition is induced by neural signal in materianl pituitary . Reason: At the end of gestation period. the maternal pituitary releases productin whichcauses uterine contractions.

Assertion (A): Parturition is induced by a complex neuro endocrine mechanism. Reason (R ): At the end of gestation period, the maternal pituitary releases prolactin which causes uterine contractions.

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) 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 ?

Which of the following endocrine glands is responsible for the release of hormones which cause uterine contractions during childbirth ?

The release of X = ................... from the maternal pituitary helps in delivery of the foetus.

Assertion (A): Oxytocin helps in parturition. Reason (R): Oxytocin acts on uterine muscle and causes expulsion of the foetus.

Read the assertion and reason carefully to mark the correct option out of the option given below Assertion: Diabetes insipidus is marked by excessive urination and too much thirst of water. Reason: Anti-diuretic hormone (AD) is secreted by the posterior lobe of pituitary. Assertion: Prolactin is also called the 'Milk ejection hormone'. Reason: Prolacti stimulates the smooth muscle contractions of the mammary glands.

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 .

Assertion: Vigorous contraction of the uterus at the end of pregnancy causes expulsion. Reason: The stimulatory reflex between the uterine contraction and oxytocin secretion results in weakening contractions.

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