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प्रश्न
Comment on the role of placenta as an endocrine gland.
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उत्तर
Placenta acts as an endocrine gland and produces the human chorionic gonadotropins, human placental lactogen, oestrogen, progesterone and relaxin (later stages of pregnancy). These hormones support foetal growth and help in the maintenance of pregnancy. Hormones like oestrogen, progestogen, cortisol and prolactin are increased several folds in the maternal blood.
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संबंधित प्रश्न
State the Function of Chorionic Villi
Explain Rh factor incompatibility during pregnancy.
Gonads develop from embryonic ______.
Eye lens is formed from ______.
In the development of the human body, the ectoderm is responsible for the formation of ______.
Mark the odd one.
Which of the following is not a function of the placenta?
hCG is secreted by ______
Explain the formation of placenta after the implantation in a human female.
The diagram given below shows the early embryonic stages of fish, reptiles, birds and humans. Though adult reptiles, birds and mammals breathe air, their embryos possess gills. How does this fact support evolution?
