blastocyst with inner cell mass

amniotic anatomy animal animalia art baby background biology blastocoele blastocyst care cavity cell cells child clipping cycle development developmental diagram early egg embryo embryoblast embryology embryonic fallopian female fertile fertility fertilization fetal genetic gynecology health human illustration image implantation infertility inner isolated life mammal mass medical medicine microscopic morula oocyte ovulation ovum path placenta pregnancy reproduction reproductive sapien science sex slide sperm stages stem structure trophoblast tube uterus vector white womb zygote