What can go wrong in the embryonic stage?

What can go wrong in the embryonic stage?

Your developing baby is most vulnerable to injury during the embryo stage when organs are developing. Indeed, infections and drugs can cause the greatest damage when exposure occurs two to 10 weeks after conception. Diabetes and obesity can possibly increase your child’s risk of birth defects.

What happens embryonic development?

Starting in the second week after fertilization, the embryo starts to develop distinct cell layers, form the nervous system, make blood cells, and form many organs. By the end of the embryonic stage, most organs have started to form, although they will continue to develop and grow in the next stage (that of the fetus).

Why in embryonic stage is the most critical stage?

The embryonic period is the most critical period of development because of the formation of internal and external structures. The critical periods of development for the organs are also discussed in the section on specific organ development.

What are the stages of embryonic development?

This union marks the beginning of the prenatal period, which in humans encompasses three distinct stages: (1) the pre-embryonic stage, the first two weeks of development, which is a period of cell division and initial differentiation (cell maturation), (2) the embryonic period, or period of organogenesis, which lasts …

When serious defects occur during the embryonic period they often?

In general, major defects of the body and internal organs are more likely to occur between 3 to 12 embryo / fetal weeks. This is the same as 5 to 14 gestational weeks (weeks since the first day of your last period). This is also referred to as the first trimester.

Which trimester is most critical?

The first trimester is the most crucial to your baby’s development. During this period, your baby’s body structure and organ systems develop.

Why is embryonic period important?

This is the embryonic period of prenatal development. This stage lasts from implantation until about 8 weeks from the time of conception (or the 10th week of pregnancy). This is the most important time of prenatal development because the embryo is developing the foundations for a healthy baby.

What are the 6 stages of embryonic development?

Terms in this set (6)

• F. Fertilization- 12-24 hours after implantation.
• C. Cleavage- a series of mitotic cell division convert zygote into multicellular embryo.
• M. Morula- cells become a solid ball.
• B. Blastula- fluid filled cluster of cells, inner cell mast develops.
• G. Gastruela- 3 primary germ layers form.
• N.

What happens in the blastocyst stage?

It is at the blastocyst stage of development (five days after fertilisation) that an embryo would normally move out of the fallopian tube and into the uterus. Once in the uterus, the blastocyst starts to attach to the uterine lining in a process known as implantation.

During which prenatal stage of development is the organism most susceptible to major structural abnormalities?

As in the case of the germinal period, often the mother does not yet know that she is pregnant. It is during this stage that the major structures of the body are taking form making the embryonic period the time when the organism is most vulnerable to the greatest amount of damage if exposed to harmful substances.

What trimester is the most critical for fetal development?

Which trimester is most important for brain development?

What develops in the third trimester? The third trimester is full of rapid growth. In fact, as your baby continues to grow, so does the brain.

What are facts about embryonic stage?

Embryonic Stage. At this point, the mass of cells is now known as an embryo. The beginning of the third week after conception marks the start of the embryonic period, a time when the mass of cells becomes distinct as a human. The embryonic stage plays an important role in the development of the brain.

What happens during the embryonic stage?

The embryonic stage is a period of rapid development. During this time, precursors to almost all of the body organs and structures are formed. This is accomplished by rapid cell division, movement, and differentiation. As a result, this is a very fragile stage of development and there is potential for malformation.

What is the embryonic stage?

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 are the four stages of embryonic 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.