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Get Answers to all your Questions
Hormones secreted by the placenta to maintain pregnancy are
- Option 1)
hCG , hPL , progestogens , estrogens
- Option 2)
hCG , hPL , estrogens , relaxin , oxytocin
- Option 3)
hCG , hPL , progestogens , prolactin
- Option 4)
hCG , progestogens , estrogens , glucocorticoids
Answers (1)
As we learnt in
Foetal ejection reflex. -
The signals for parturition originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex.
- wherein
This triggers release of oxytocin from the maternal pituitary. Oxytocin acts on the uterine muscle and causes stronger uterine contractions, which in turn stimulates further secretion of oxytocin.
Placenta releases human chorionic gonadotropic hormone (hCG) which stimulates the Corpus luteum during pregnancy to release estrogen and progesterone and also rescues corpus luteum from regression. Human placental lactogen (hPL) is involved in growth of breast. Progesterone maintains pregnancy, keeps the uterus silent by increasing uterine threshold to contractile stimuli.
Option 1)
hCG , hPL , progestogens , estrogens
This is correct.
Option 2)
hCG , hPL , estrogens , relaxin , oxytocin
This is incorrect.
Option 3)
hCG , hPL , progestogens , prolactin
This is incorrect.
Option 4)
hCG , progestogens , estrogens , glucocorticoids
This is incorrect.
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