Formation of Heart-Embryo changes

The nutritional supply of an embryo varies depending on its stage of development During the first week, before implantation, deutoplasm (accumulated cytoplasmic nutrients) of oocyte supplies nutrition. During the second week, breakdown products of endometrium (due to implantation) nourishes the embryo by simple diffusion. After the third week, maternal blood nourish embryo through utero placental […]

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