describe the structure and function of placenta
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Placenta is the circular organ present in the uterus of pregnant mammals which is required for the nourishment and maintenance of the fetus. It performs various function like:
1) Nutrition : It helps to transport nutrients from mother's blood to foetus for its development.
2) Respiration: It provides oxygen to the fetus and take CO2 away from the fetus.
3) Excretion: It helps in the removal of waste products from the fetus and transfers them to mother's blood.
4) Immunity: It provides immunity to the fetus. Antibodies developed in mother passes onto fetus through the placenta.
5) Storage: Placenta can stores some fats, glycogen and iron.
6) Secretion of hormones: It secretes many hormones like estrogen, progesterone, gonadotropin and placental lactogen, thus functions as an endocrine gland.
1) Nutrition : It helps to transport nutrients from mother's blood to foetus for its development.
2) Respiration: It provides oxygen to the fetus and take CO2 away from the fetus.
3) Excretion: It helps in the removal of waste products from the fetus and transfers them to mother's blood.
4) Immunity: It provides immunity to the fetus. Antibodies developed in mother passes onto fetus through the placenta.
5) Storage: Placenta can stores some fats, glycogen and iron.
6) Secretion of hormones: It secretes many hormones like estrogen, progesterone, gonadotropin and placental lactogen, thus functions as an endocrine gland.
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Here is your answer
mate!!
Structure of placenta:
Placenta s a disk which is embedded in uterine wall. It contains villi on the embryo's side of the tissue. On the mother's side are blood spaces , which surround the villi.
Function of placenta:
(1)Embryo get's nutrition from the mother's blood, through placenta.
(2)Respiratory gases like O2 and Co2 also pass through the placenta.
(3)The developing embryo gives out it's waste into the blood through placenta, for removal.
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