Stages of Embryonic Development: An Academic Review

Stages of Embryonic Development: An Academic Review

Embryonic development refers to the process of growth and development of embryo. On the other hand, stage of embryonic development is a phase within the period of embryonic development that is marked by distinct growth changes in the embryo. Also known embryogenesis, the process of embryonic development starts after fertilization of an ovum by a single spermatozoon. The spermatozoon produces enzymes which allow it to penetrate through a layer of follicle cells covering the ovum (corona radiata) and fuses with the egg’s plasma membrane to form a diploid, called zygote (Campbell & Reece, 2005). In human beings, the process…