Question

Role of placenta?
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Answer 1

$\huge\bold{Answer}$

$\boxed{\textbf{Placenta}}$

Placenta is a physiological connection between the baby(embryo)and the uterine wall of the mother.

This is a disc-Shaped structure embedded in the uterine wall.

The foetus part of placenta is formed of villi which lie embedded in Maternal blood spaces.

$\textbf{\underline{Functions of placenta}}$

● Placenta provides nutrition and oxygen to the foetus from mother's blood.

● It removes carbon dioxide and nitrogenous waste from the blood of foetus.

● It produces hormone Progesterone* for maintaining pregnancy

A cord containing blood vessels connects the placenta with foetus.

It is called $\bold{Umbilical\:Cord}$

*Progesterone and Estrogen control normal development of female genital organs and secondary sexual characters.

Answer 2

The perfusion of the intervillous spaces of the placenta with maternal blood allows the transfer of nutrients and oxygen from the mother to the fetus and the transfer of waste products and carbon dioxide back from the fetus to the maternal blood.