Corpus luteum in pregnancy has a long life. However, if fertilisation does not take place, it remains active only for 10-12 days. Explain.
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Corpus luteum secretes progesterone which is essential for maintaining the endometrium. This essential for proper development of the foetus. Hence, corpus luteum has a long life during pregnancy. On the other hand, in the absence of fertilization; there is no work for corpus luteum and hence it remains active only for 10-12 days.
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