The reproductive system uses the process of producing a new generation to continue the existence of the species by the fusion of two cells. this is achieved in humans by the fusion of one sperm and one ovum (egg). This fusion is called "fertilization". We cover the subject of embryology.

All About Embryology

submitted by Dr. Gary Farr 6/21/2002
Embryology is the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. The human body , like that of most animals, develops from a single cell produced by the union of a male sex cell and a female sex cell. Human development follows closely the basic vertebrate pattern, and it departs only in certain details from the type specifically characteristic of mammals. A prenatal period, in which most of the developmental advances occur, is followed by a long postnatal period. Only at about the age of 25 are the last progressive changes completed.