Understanding the 3 Prenatal Development Stages - Verywell Mind This period is divided into three key stages: the germinal stages (weeks 0-2), the embryonic stage (weeks 3-8), and the fetal stage (from 9 weeks until birth) During this time, the brain and body undergo rapid, crucial changes that set the stage for life after birth
Fetal Development: Week-by-Week Stages of Pregnancy The embryonic stage lasts from about the third week of pregnancy until the end of the eighth week of pregnancy The blastocyst begins to take on distinct human characteristics
Prenatal development | Description, Stages, Timeline | Britannica Prenatal development, the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth This process can be divided into three distinct stages: the pre-embryonic stage, the embryonic period, and the fetal period
Human Embryonic and Fetal Development: Stages and Milestones Explained . . . This diagram of human embryonic and fetal development offers a detailed look at the stages from fertilization to 20 weeks It serves as a valuable tool for understanding prenatal growth, aiding in education, clinical practice, and research in reproductive health
Fetal development by week: Your baby in the womb Follow your baby's development week by week, from conception to labor, in these amazingly detailed, doctor-reviewed images At the start of this week, you ovulate Your egg is fertilized 12 to 24 hours later if a sperm penetrates it
28. 2 Embryonic Development – Anatomy Physiology 2e The first 2 weeks of prenatal development are referred to as the pre-embryonic stage A developing human is referred to as an embryo during weeks 3–8, and a fetus from the ninth week of gestation until birth
5. 1 Periods of Prenatal Development - Baylor University The inner group of cells, or embryonic disk will become the embryo, while the outer group of cells, or trophoblast, becomes the support system which nourishes the developing organism This stage ends when the blastocyst fully implants into the uterine wall (U S National Library of Medicine, 2015)
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