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  4. Human placental lactogen, relaxin, progesterone and estrogen are secreted from

Q. Human placental lactogen, relaxin, progesterone and estrogen are secreted from

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Solution:

Placenta is defined as a temporary intimate mechanical and physiological connection between foetal and maternal tissues for the nutrition, respiration and excretion of the foetus. Placenta acts as a temporary endocrine gland whose chorion layer is responsible for secretion of of many hormones like hPL, hCG, progesterone, oestrogen etc