Identify the three stages of prenatal development pdf

Use the key choices to identify the embryonic stage or process described below. Pregnancy has three trimesters, each of which is marked by specific fetal developments. Child growth and development pregnancy and prenatal. The first two weeks after conception are known as the germinal stage. 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. During each prenatal stage, environmental factors affect the development of the fetus. In the early stages of development, gametes divide as all other cells do a process called mitosis, with each set of 23 chromosome pairs duplicat ing itself.

Premature infants may have problems with their growth and development, as well as difficulties in breathing and digesting. Factors affecting prenatal development essay 1145 words. However, you do not have to read the description of embryonic or fetal development for gestational. The average length of human development is 38 weeks from the date of conception. The early changes that signify pregnancy become present in the first trimester. If a pregnant woman contracts rubella in the first three months of pregnancy, she is likely to give birth to a child with a congenital abnormality such as heart disease, cataracts, deafness, or mental retardation. Also during this third busy week of embryonic development or proliferation of cells, three vesicles develop at the head end of the neural tube, which will develop into. The three primary stages of prenatal development are the germinal stage, the. Most babies are born healthy and most hazards can be avoided. Prenatal development is also organized into three equal trimesters, which do not correspond with the three stages. Prenatal development is the process that occurs during the 40 weeks prior to the birth of a child.

Stages of physical development in children hello motherhood. Prenatal development, the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. Identify the stages of pregnancy and vulnerable periods of fetal development. Physical development in children refers to the development of their motor skills, which involves using their bodies. Gross motor development is widely considered to be the result of innate, biological factors, with postnatal factors contributing to a.

Explain how the developing embryo and fetus may be harmed by the presence of teratogens and describe what a mother can do to reduce her risk. Understanding psychological changes during pregnancy. The 3 stages of human development are germinal stage, embryonic stage, and fetal stage. Prenatal development baby, stages, average, definition. Three stages germinal stage zygote embryonic stage embryo fetal stage fetus principles of development. The first 22 pairs of chromosomes are known as autosomes and determine.

Depending on the stage of the pregnancy, health care providers may also do blood tests and imaging tests, such as ultrasound exams. Prenatal exposure to a dangerous substance is only harmful in the first trimester of the pregnancy. Trace the three stages of prenatal development briefly. Prenatal development boundless psychology lumen learning.

Teratogens and their effects on pregnancy and development. The second trimester is weeks to 27, and the third trimester starts about 28 weeks and lasts until birth. Psychological changes in the first trimester usually involve anxiety about the unborn baby. Mirroring eriksons stages, lifespan development is divided into different stages that are based on age.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. From beginning as a onecell structure to your birth, your prenatal development occurred in an orderly and delicate sequence. Pregnancy and prenatal development chapter 4 prepared by. The first two weeks of development are concerned with simple cell multiplication. Conception conception is the union of the mothers and fathers sex cells, also known as gametes or germ cells. Most of us, except those who grow up in very difficult circumstances, think of childhood as a happy and easy time. Prenatal exposure to a dangerous substance is only. Factors affecting prenatal development the elaborate details of life begin with a single cell that develops into a full term fetus within approximately 40 weeks, 280 days or 10 lunar months. It is a time when you as a couple confront your fears and expectations about becoming parents and begin to determine your own parenting style. The duration of pregnancy is divided into three equal segments called trimesters. The streeter term horizon was replaced in the newer classifications by the old term stage used first by mall 5 in 1914. Life span development i chapter 9 2 test your knowledge. Summary prenatal development development happens quickly during the prenatal period, which is the time between conception and birth. This tiny mass of cells then adheres to the inside wall of the uterus.

The first trimester months is essential to the proper development of the. Identifying the three stages of prenatal development. Research has proven that drinking alcohol in any amount during pregnancy is safe. The three stages of pregnancy 1 st, 2 nd, and 3 rd trimester conception to about the 12th week of pregnancy marks the first trimester. Cleveland clinic is a nonprofit academic medical center. Smoking cigarettes while pregnant isnt just going to affect the mother, it can, and usually does, have negative effects on t\. This period is generally divided into three stages. About one month into this stage, the sex organs of the fetus begin to form. Papalia, olds, feldman child growth and development. Prenatal development takes about 38 weeks to complete and goes through these three developmental stages. The germinal stage occurs from conception until 2 weeks implantation, during which the.

The prenatal environment and hazards to healthy prenatal. Nature and nurture combine forces in prenatal development. In the final step of gamete division, however, called meiosis, each new cell receives only one chromosome from each original pair. The developing fetus is completely dependent on the mother for life, and it is important that the mother receives prenatal care, which is medical care during. These 38 weeks are divided into three stages of unequal length, identified by specific changes within the developing organism see. The process of growth and development within the womb, in which a singlecell zygote the cell formed by the combination of a sperm and an egg becomes an embryo, a fetus, and then a baby. Factors affecting fetal development lady care health. Conception occurs when an egg from the mother is fertilized by a sperm from the father. Much of development is generated by the fetus itself.

Teaching children the facts of life male and female reproduction birth defects, genetics, and heredity pregnancy stages of prenatal development labor, childbirth, and postpartum care. Regular prenatal visits can help your doctor monitor your pregnancy and identify any. The course of this prenatal development is divided into three main periods. Each of these stages is important for reaching the ultimate goal of a healthy baby. The three stages of prenatal development are the germinal stage, the embryonic stage and the fetal stage. State several physiological adjustments during pregnancy. Danielsa, lee shumowb adepartment of psychology and child development, california polytechnic state university, faculty offices north building, san luis obispo, ca 93407, usa. The three primary stages of prenatal development are the germinal stage, the embryonic stage, and the fetal stage. We do not endorse noncleveland clinic products or services. Ovulation usually occurs around week two of the cycle. The last stage of prenatal development is the fetal stage, which lasts from two months after conception until birth. However, a number of things, usually caused by genetics or environmental problems, can go wrong during this time.

In the two weeks prior to conception, the body is readying the womb for a potential pregnancy by growing a layer of rich, blood perfused tissue. Pregnancy is an experience full of growth, change, enrichment, and challenge. Prenatal development is also organized into three equal trimesters that do not correspond with the three stages. There are three stages of prenatal developmentgerminal, embryonic, and fetal. Each stage is characterized by defined external and internal features. These visits also include discussions about the mothers health, the fetuss health, and any questions about the pregnancy. Describe how you were able to tell by observation when a sea urchin egg was fertilized. The three main stages of development are ovulationconception, embryonic development and development of the fetus. Information presented today should lead to the following outcomes.

A missed period may be the first sign that fertilization and implantation have occurred, ovulation has ceased, and you are pregnant. As a result, much of our development occurs in a rather stimulating environment, which is both a challenge and a source of opportunity even so, a great deal of development occurs prenatally. She takes all possible steps needed for the growth of her baby. There are very few prenatal factors that can harm a developing person. Research conducted at rutgers university demonstrated how prenatal factors affect linguistic development and how postnatal factors are key components contributing to a childs cognitive development. Interestingly, there is not a direct relationship between the.

The zygote is transformed into an embryo and then a fetus. The 3 primary stages of prenatal development are the germinal period, the embryonic period, and the fetal period. Start studying identifying the three stages of prenatal development. These nine months are divided into three 3 month periods called trimesters. The process of prenatal development occurs in three main stages. In most cases, prenatal development occurs normally and follows the established patterns of development with little variation. Prenatal development nature and nurture combine forces in prenatal development. The fetus quickly grows as bones and muscles form, and it begins to move inside the uterus. According to north dakota state university, physical development is defined by a childs gross motor, fine motor and balance or coordination skills. Prenatal development proceeds through the germinal first 2 weeks, embryonic 2 weeks to 2 months, and fetal stages 2 months to birth as the zygote is differentiated into a human organism. Development happens quickly during the prenatal period, which is the time between conception and birth. We will discuss prenatal, infant, child, adolescent, and adult development.