What is placenta? What is the …

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What is placenta? What is the function of placenta?

Posted by Sunidhi Singh 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 4 months ago

Placenta is a disc like special tissue which develops between the uterus wall and the embryo after implantation. Its function is the exchange of nutrients, oxygen and waste products between the embryo and the mother. It contains villi on the embryo’s side of the tissue. On the mother’s side are blood spaces, which surround the villi. 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. The time period from the fertilisation up to the birth of a baby is called gestation. The average gestation period in humans is about 9 months (about 38 weeks).The child is born as a result of rhythmic contractions of the muscles in the uterus.

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Posted by Pandey Ji 5 months, 4 weeks ago

CBSE > Class 10 > Science