Parturition is induced by a complex neuroendocrine mechanism. The signals for parturition originate from the fully developed foetus and the placenta that induce mild uterine contractions called foetal ejection reflex.

Placenta acts as an endocrine tissue and produces several hormones like hCG, hPL estrogens, progestogens, etc.

The milk produced during the initial few days of lactation is called colostrum that contains several antibodies absolutely necessary to develop resistance for the new-born babies.
Fimbriae helps in collection of the ovum after ovulation.

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