18-22 days 18-22 days
The fetal period occurs during the third stage of prenatal development.
The fetal period of development occurs during the third stage of prenatal development, which is the fetal stage.
The germinal period is the shortest period of prenatal development, lasting approximately two weeks. This period begins at fertilization when the egg is fertilized by sperm and ends when the fertilized egg attaches to the uterine wall.
The third period of prenatal development is known as the fetal period, which begins at around nine weeks of gestation and continues until birth. During this stage, the developing fetus undergoes significant growth and maturation of systems and organs. Key developments include the formation of recognizable human features, increasing complexity of bodily functions, and the accumulation of body fat in preparation for life outside the womb. This period is crucial for overall development and health of the fetus.
The period of prenatal development where major organs start developing is called the embryonic period. This stage typically occurs from about week 4 to week 8 after fertilization. This is a critical period for organ development and any disruptions during this time can lead to significant birth defects.
The embryo period is considered the most important in prenatal development because this is when the basic body structures and organs are formed. Any disruptions or abnormalities during this period can have long-lasting effects on the health and development of the fetus. It sets the foundation for the remainder of the pregnancy and beyond.
The fetal period.
The period of prenatal development that occurs 2 to 8 weeks after conception is known as the embryonic period. This stage is crucial for the formation of major organs and structures in the developing embryo, and any disruptions during this period can have long-lasting effects on the baby's health.
The three main periods of prenatal development, in order from conception to birth, are the germinal period, the embryonic period, and the fetal period. The germinal period occurs from conception to about two weeks, during which the fertilized egg implants itself in the uterus. The embryonic period lasts from the third to the eighth week, during which major organs and structures begin to form. Finally, the fetal period spans from the ninth week until birth, during which the fetus grows and matures in preparation for life outside the womb.
embryonic
embryonic period
Fetus