Give reasons:- placenta has villi on embryo side, oral pills are hormonal preparation, uterine lining are thick and spongy
Answers
Answer:
Explanation:placenta has villi on embryo side to hold the embryo...
Oral pills are hormonal preparation containing mainly progesterone nd estrogen ... So that their high value in blood causes feedback inhibition of gnrh nd fsh and no new follicles are developed.. and ovulation does not takes place.
Uterine lining is thick and spongy i.e endometrial layer as it provide nutrition to developing embroyo..
The placenta contains villi on the embryo’s side of the tissue. On the mother’s side are blood spaces, which surround the villi. It has the following functions: This provides a large surface area for glucose and oxygen to pass from the mother to the embryo. The developing embryo will also generate waste substances which can be removed by transferring them into the mother’s blood through the placenta.
Hope it helped u....