Fetal membranes are all the membranes that develop from the zygote and they do not share in the formation of the embryo (extraembryonic structures from the primitive blastomeres). Fetal membranes are Chorion, Amnion, Yolk...
The embryo is the early stage of the development of the multicellular organism. Each embryo starts development as the zygote, a single cell resulting from the fusion of gametes, The zygote undergoes many rapid...
Fertilization is the fusion of the male gamete (sperm) with the female gamete (ovum) to form the zygote which divides to form the embryo, The man may be considered infertile, if the number of...
The ovum (the egg cell) is the female reproductive cell in the female reproductive system, It is large (as sesame seed size) due to the storage of the nutrient materials.
