What are the three periods of gestation?

What are the three periods of gestation?

Overview. A typical pregnancy lasts 40 weeks from the first day of your last menstrual period (LMP) to the birth of the baby. It is divided into three stages, called trimesters: first trimester, second trimester, and third trimester. The fetus undergoes many changes throughout maturation.

What are the major critical periods of development during prenatal growth?

There are three stages of prenatal development: germinal, embryonic, and fetal. Keep in mind that this is different than the three trimesters of pregnancy. Let’s take a look at what happens to the developing baby in each of these stages.

Which period of prenatal development is the most critical and why?

The embryonic period is the most critical period of development because of the formation of internal and external structures.

What is the perinatal period?

Perinatal is the period of time when you become pregnant and up to a year after giving birth. You might also have heard of the following terms: Antenatal or pre-natal meaning ‘before birth’ Postnatal or postpartum meaning ‘after birth’

What is the order of prenatal development quizlet?

The correct sequence of prenatal development is: embryonic period, fetal period, germinal period.

What is the embryo period?

After conception, your baby begins a period of dramatic change known as the embryonic stage. This stage runs from the 5th through the 10th week of pregnancy. During this stage, the baby is called an embryo.

What are critical periods and teratogens?

The embryo is most susceptible to teratogenic agents during periods of rapid differentiation. The stage of development of the embryo determines suscep- tibility to teratogens. The most critical period in the development of an embryo or in the growth of a particular organ is during the time of most rapid cell division.

What are the three stages in the growth period quizlet?

This period is generally divided into three stages: the germinal stage, the embryonic stage, and the fetal stage.

Which is the correct order of the three prenatal stages?

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. What is the correct sequence of prenatal development?

Is the prenatal period part of the development process?

Fetal Stage. While you might think of child development as something that begins during infancy, the prenatal period is also considered an important part of the developmental process. Prenatal development is a time of remarkable change that helps set the stage for future psychological development.

When does the fetal period start and end?

The stage of prenatal development that occurs from the end of the embryonic period until birth is called the fetal period. The most notable development during this stage is the dramatic change in size that takes place.

Which is the first stage of baby development?

The first stage is the germinal stage. The germinal stage occurs during the first two weeks of a baby’s development. During this time, the zygote moves from the Fallopian tube toward the uterus and rapidly divides.