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Sandra Saju asked in Science
What is placenta? Also write its TWO functions ?
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Bubblyy Bhavzz answered this
504 helpful votes in Science, Class XI-Science
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 CO2away 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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