Describe, in brief, the changes that …

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Describe, in brief, the changes that the uterus undergoes : (i)to receive the zygote(ii) if zygote is not formed.

Posted by Nitin Tiwari 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 8 months ago

Fertilisation is possible if mating takes place during the middle of menstrual cycle because in a normal healthy girl the ovulation takes place on the 14th day of the beginning of menstrual cycle of 28 days. The embedding of embryo in the thick lining of the uterus is called implantation. The lining thickens and is richly supplied with blood to nourish the growing embryo. If however, the egg is not fertilised, then the thick lining of the uterus is not required and the uterus lining breaks down and comes out through the ****** in the form of blood and mucous. This is called menstruation.

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CBSE > Class 10 > Science