Pregnancy involves multiple stages of development from "summary" of Human Biology by Cecie Starr,Beverly McMillan
The process of pregnancy is a complex and intricate journey that involves multiple stages of development. Each stage plays a crucial role in the growth and maturation of the developing fetus within the mother's womb. During the first stage of pregnancy, known as fertilization, a sperm cell fertilizes an egg cell to form a zygote. This single cell then begins to divide and multiply rapidly through a process called cleavage. The zygote eventually develops into a blastocyst, which implants itself into the lining of the uterus. The second stage of pregnancy, known as embryonic development, is a critical period during which the major organs and structures of the fetus begin to form. This stage is characterized by rapid cell division and differentiation, as well as th...
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