The Embryonic Period
The embryonic period is the development of a human embryo within the uterus or womb and it is characterised by the growth and maturation of tissues and organs from a single fertilised cell. Embryogenesis is the development of the embryo of the first eight weeks of development after fertilisation. After which it is termed the foetal period which starts from the 9th week of development right through to birth.
The embryo develops amazing anatomical features even in its first few weeks and although the embryo only reaches the size of a kidney bean at eight weeks measuring just 1.6cm, the organs and muscles have already begun to function and where circulatory, excretory, and neurologic systems have also begun to develop.