What changes are observed in the uterus subsequent to implantation of young embryo ? (CBSE Delhi 2017)
Endometrium thickens, becomes glandular and highly vascular. The contact region between embryo and uterine wall grows into placenta. Placenta
helps the embryo in obtaining nourishment and oxygen from blood sinuses of the uterus. It also helps in transfer of wastes from embryo to the blood
of the mother.