english: The placenta keeps the calf alive right up until its birth, when the umbilical cord breaks and the newborn's own respiratory, circulatory, and waste disposal systems take over.
non_english: Posteljica ohranja mladiča pri življenju vse do rojstva, ko se popkovina pretrga in mladičev lastni dihalni, krvožilni in izločalni sistemi prevzamejo njeno funkcijo.