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Parturition...

Parturition

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Parturition is the completion stage of pregnancy and child birth.
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The relaxin secreted by placenta relaxes the pubic ligaments during parturition. i. Mention the other hormones secreted by placenta. ii. Suppose relaxin is not secreted, mention the other method for the delivery of the child.

A connection between foetal membrane and uterine wall is known as placenta. a. Mention the functions of placenta. b. What is the fate of placenta after parturition? c. Sometimes the expulsion of placenta is followed by bleeding. Give reason.

{:(1."Off springs",-,(a)"Pollination by insects"),(2."Anemophily",-,(b)"Pollinataion by animals"),(3."Spermatogenesis",-,(c)"Blood vessels"),(4."Umbilical cord",-,(d)"Expulsion of young one"),(5."Entomophily",-,(e)"Seminiferous tubules"),(6."Parturition",-,(f)"Sexual reproduction"),(7."Zoophily",-,(g)"Pollination by wind"):}

Match column I with column II and select the correct option from the codes given below. {:("Column I","Column II"),("Fertilisation",(i)"Isthmus of oviduct"),("Cleavage",(ii)"Later part of oviduct"),("Morula",(iii)"Cervix"),("Blastocyst",(iv)"Ampulla of oviduct"),("Parturition",(v)"Uterine wall"):}

Match column I (terms) with column II (definitions) and select the correct option from the codes given below. {:(,"Column I",,"Column II"),((A),"Parturition",(i),"Attachment of embryo to endometrium"),((B),"Gestation",(ii),"Release of eff from Graafian follicle"),((C),"Ovulation",(iii),"Delivery of baby from uterus"),((D),"Implantation",(iv),"Duration between pregnancy and birth"),((E),"Conception",(v),"Fomation of zygota by fusion of the ff and sperm"),(,,,"Stoppage of ovulation and menstrtion"):}

What is true for lactational amenorrhea ? (i) It means absence of menstruction (ii) Ovulation does not occur during the lactational period (iii) Chances of contraception are almost nil upto six months following parturition (iv) Side effects are almost nil (v) Contraceptive efficiency reduces after the period of intense lactation (vi) It is natural method of contraception (vii) It increases phagocytosis of sperms

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