what are the fetal development stages?
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The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week is known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.
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Prenatal Development. Development happens quickly during the prenatal period, which is the time between conception and birth. This period is generally divided into three stages: the germinal stage, the embryonic stage, and the fetal stage. The two-week period after conception is called the germinal stage.
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Fetal Development: Stages of Growth. Within 24 hours after fertilization, the egg that will become your baby rapidly divides into many cells. By the eighth week of pregnancy, your baby will change names from an embryo to a fetus. There are about 40 weeks to a typical pregnancy.
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['First stage of labor. Thinning (effacement) and opening (dilation) of the cervix. ... ', 'Second stage of labor. Your baby moves through the birth canal. ... ', 'Third stage of labor. Afterbirth. ... ', 'Fourth stage of labor. Recovery.']
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The fetal age is another term that refers to the actual age of the baby starting at the time of conception. So typically, fetal age is going to be two weeks less than gestational age.
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This period is generally divided into three stages: the germinal stage, the embryonic stage, and the fetal stage. The two-week period after conception is called the germinal stage. Conception occurs when a sperm cell combines with an egg cell to form a zygote.
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Baby development. Share on Pinterest By the time you are 11 weeks pregnant, your baby's nasal passage is open, and hair follicles have formed. At 11 weeks pregnant, some of the rapid fetal developments underway include: Head and neck: Hair follicles form, head is the same length as his or her body.
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What are Mental Leaps? These are ten stages from week 5 of birth to around 17 months of age. Each stage represents changes in a baby's development and perception of their world. Babies are only capable of developing particular skills after their brain has matured sufficiently.
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The embryonic period is all about the formation of important systems of the body. Think of it as your baby's basic foundation and framework. The fetal period, on the other hand, is more about growth and development so your baby can survive in the outside world.
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Immature Lungs – Most babies have mature lungs by 36 weeks of gestation. However, since babies develop at different rates, there are exceptions to this. If a mother and her health care provider know that the baby might be coming early, an amniocentesis may be performed to check the maturity level of the lungs.
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Your baby at 5 weeks. The baby's nervous system is already developing, and the foundations for its major organs are in place. At this stage, the embryo is around 2mm long. The heart is forming as a simple tube-like structure. The baby already has some of its own blood vessels and blood begins to circulate.
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The entire pregnancy is broken up into roughly nine months or, more specifically, about 40 weeks of gestation. During each of these months, different parts of your baby's body will develop. In the first 20 weeks, fetal growth is usually fairly consistent.
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12 Weeks Pregnant: Your Baby's Development At 12 weeks pregnant, you've nearly reached the end of the first trimester, and your little one has been busy. All of your baby's vital organs and body parts will be in place this week; even the sex organs have developed.
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Fetal ultrasound scan of the third trimester. During the third trimester of pregnancy the fetal ultrasound scan is performed with the help of the abdominal sensor within pregnancy weeks 34-36. At this stage of pregnancy the fetus has all vital organs fully developed and the period of fast growth and maturity continues.
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The following stages of life are described in detail: germinal stage, embryonic stage, fetal stage, infancy, childhood, adolescence, and adulthood.
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The four initial stages of the embryonic development are the morula stage, the blastula stage, the gastrula stage and the neurula stage.
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['Stage 1: 0 to 10 months.', 'Stage 2: birth to 6 years.', 'Stage 3: 7 to 22 years.', 'Stage 4: 23 to 65 years.', 'Stage 5: older than 65 years.']