Prenatal Human Development

S: Page 134 is all about the embryonic period of pregnancy. The embryonic period lasts from week 3 to week 8, and it is a very important time because that is when the ectoderm, mesoderm, and endoderm are being formed. The ectoderm, mesoderm, and endoderm will later for more important oragans and body structures.

Anything a mother consumes will affect her baby’s health, either positively or negatively. After the sperm enters into the egg, instantly, the baby begins to grow inside of the placenta, which is inside of the mothers’ uterus. “The placenta has been described as a pancake-shaped organ that attaches to the inside of the uterus and is connected to the fetus by the umbilical cord.” As the placenta produces the hormones for the baby, it also supplies the blood to the fetus from the mother. The most important element that allows the fetus to grow is the umbilical cord. The umbilical cord is composed of three blood vessels that attach to the placenta and the fetus. All of these components help the baby’s growth, but the amniotic sac, which is composed of amniotic fluid, helps protect the fetus. The amniotic fluid helps the baby maintain a regular body temperature that

During this period the embryo is not normally susceptible to teratogens. If an embryo is exposed to a teratogen at this time, it will either survive with little defects, or damage of the cells will result in prenatal death. Between weeks three through week six, the heart and central nervous system are highly sensitive to teratogen exposure. Brain growth and development continues up to sixteen weeks gestation. During week four the arms, legs, ears and eyes, begin to develop and are sensitive until week nine. During week six, the teeth and palate begin to form and are sensitive to teratogen exposure until week nine. By week seven, external genitalia begin to form, which is when they are most sensitive to damage. Major morphologic abnormalities from teratogen exposure occur during week three to week eight which is known as the embryonic period, which is when organogenesis occurs. After week nine, until term, which is know as the fetal period, minor morphological defects and physiologic defects can occur. Some organs like the heart are susceptible for longer periods of time, while others like the limbs are susceptible to damage for shorter periods of time. Primordial cells and early stages including the primordial heart and neural crest cells are more susceptible compared to later stages of

As a child is developing in the womb, its development can be affected at this time, for instance if the mother smokes or uses drugs or excessive

It is amazing how fast the heart starts beating during the prenatal stage. In the second and third months of development, the embryo begins to develop into human form. They start to grow their mouth, nose, eyes, eyelids, and ears. The authors intended audience for this article would probably be mothers who are either becoming a new mother or a mother again.

It is imperative for a mother to take care of herself while pregnant. This will give the fetus a better chance at healthy developmental milestones. One way to achieve this is through a healthy diet which aids fetal brain development. Moreover, taking the supplemental vitamins recommended by the physician helps too. Finally, a mother should try to eliminate too much stress in her life while pregnant. This can have a negative impact on the pregnancy. This is what healthy development looks like during conception. At 3 months the baby is fully formed. The hands, arms, feet and toes are all present. Also, the bodily organs are present but need to mature more at this point. During the 3-6 month period is where the most rapid brain development takes place (Hutchison, 2013). This is the trimester where you begin to feel movement. At 6-9 months the baby continues to grow and mature to prepare for entry into the world.

Physical development of the human begins at conception when the egg is fertilized by the sperm. Once the ovum is fertilized, the process of mitosis begins, allowing the cells to split and form the human being. Through this process, each parent contributes 23 chromosomes, which are present in every cell of our bodies, and are made up of DNA and genes (Broderick & Blewitt, 2015). The genes that we inherit from our parents determine our physical features, such as hair and eye color, and height. Furthermore, the combination of various genes within the body at the time of conception may result in the individual carrying unexpected traits and illnesses (Broderick & Blewitt, 2015).

Teratogens are harmful exposures that a fetus can be exposed to when they cross the protective

    According to parents.com, after conception, a fetus begins to develop rather quickly. In the fifth week of pregnancy, a baby’s heart begins to beat. A baby also develops three distinct layers, ectoderm, endoderm, and mesoderm. These three layers will eventually form the body systems that are necessary

First trimester: By 12 weeks of pregnancy the foetus will be fully formed. The ovum grows and develops certain important parts of the baby’s body such as spinal cord, nervous system, gastrointestinal system, heart and lungs in the first four weeks from conception. The heart starts beating and brain and other organs forms by eight weeks. At this stage, the face is formed and arms and legs start to move. The baby grows to 3 inches long and

Teratogens can harm an embryo. Most will not kill an embryo. However, any large quantity of teratogens like nicotine will

While reading the third chapter of Development of Children and Adolescents, I gained insight into the cold hard facts of prenatal development. I found this section of the reading to be important for a several reasons. As a young woman, I hope to one day settle down and have a family. By becoming better educated on the topic, I now have a grasp on how an unborn child is conceived, the stages in which they develop, and the environmental factors a mother contributes to health risks.

Development of a fetus in the womb is a remarkable period of rapid growth and creation for the young life to be. There are a myriad of outside forces that can influence the advancement of the zygote in its journey from fertilized egg to blastocyst, embryo and fetus. These outside forces can have profound implications for the mind and body of the young life both immediate and throughout the lifespan. Exposure to these environmental hazards can come from many different sources, some known and predominantly understood, others are not. These all can lead to vastly different outcomes for the child while in utero and after birth. To be able to fully understand the mechanics of fetal development, the outside hazards that can influence its growth

Human development research refers to pregnancy loss in young and older women. The embryonic stem cell can be used to determine developmental issues that can arise during pregnancy. For instance, genes are known to be turned on and off during development (Stem Cell Information, 2015). When this is done at the wrong time it can lead to abnormal growth

The prenatal period takes place in the first two weeks of conception. Heredity and environmental influences (which are often negative) are also developed during this stage. At this stage the organism is more susceptible to these influences, than during any other period. Infancy is the next stage, various changes start to occur and attachments start to form. Coordination, sensory and motor skills start to develop, as well as the expression of