When pregnancy does not occur, the life of corpus luteum is about :
(a) 4 days (b) 10 days
(c) 14 days (d) 28 days
(d) 28 days
option d is correct
In menstrual cycle one ovum is released from either ovaries and the remaining graffian follicle converts into corpus luteum which will secret progesterone for only 7 days but if pregnancy occurs then it secret progesterone for 3 months , in this scenario how the corpus luteum will secret RELAXIN at the parturition at 9 month if it is already died and replaced by placenta?