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(a) Write the function of following par...

(a) Write the function of following parts in human female reproductive system :
(i) Ovary , (ii) Oviduct , (iii) Uterus
(b) Describe in brief the structure and function of placenta .

Text Solution

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(a) (i) Ovary. Ovaries produce nature female sex cells called 'ova' or eggs and also secrete certain female sex hormones.
(ii) Oviduct. The ovum released by an ovary goes into the oviduct and the fertilisation of ovum by a sperm takes place ini the oviduct.
(iii) Uterus. The growth and development of a fertilised ovum into a boby takes place in the uterus.
(b ) Structure. After implantation , a disc like special tissue develops between the uterus wall and the embryo called placenta. It is the connecting link between the mother's body and the baby. It contains blood space on the mother's side and thousands of villi on the foetal side.
Functions :
(i) It provides a large surface area required for the exchange of nutrients , oxygen and waste products between the embryo and the mother.
(ii) it also removes the metabolic waste from the embryo.
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