How long is the prenatal period?

The average length of time for prenatal development to complete is 38 weeks from the date of conception. During this time, a single-celled zygote develops in a series of stages into a full-term baby. The three primary stages of prenatal development are the germinal stage, the embryonic stage, and the fetal stage.

Simply so, how many weeks is the prenatal period?

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.

One may also ask, how long is the germinal stage? The germinal period (about 14 days in length) lasts from conception to implantation of the zygote (fertilized egg) in the lining of the uterus. During this time, the organism begins cell division and growth.

In this way, what are the stages of prenatal?

There are three stages of prenatal development: germinal, embryonic, and fetal. Prenatal development is also organized into three equal trimesters that do not correspond with the three stages. The germinal stage occurs from conception until 2 weeks (implantation), during which the zygote begins to rapidly divide.

What is the longest stage of pregnancy?

The longest period of prenatal development is the fetal period which begins at the 9th week after conception and lasts until birth. By the 12th week, the genitals have formed. Development of all the structures of the body continues and by the end of the third month, all structures are present although immature.

37 Related Question Answers Found

What is the last organ to develop in a baby?

Week 6: The neural tube closes

Just four weeks after conception, the neural tube along your baby's back is closing. The baby's brain and spinal cord will develop from the neural tube. The heart and other organs also are starting to form.

Which stage of pregnancy are the major organs developing?

Seven weeks: The major organs develop. Distinct facial features appear with skin covering the eyes. There are now clearly definable arms and legs with the emergence of developing fingers and toes. The muscles, bones and blood vessels begin to develop.

Is a fetus a baby?

Your developing baby is called an embryo from the moment of conception to the eighth week of pregnancy. After the eighth week and until the moment of birth, your developing baby is called a fetus.

Is an embryo human life?

Embryos are whole human beings, at the early stage of their maturation. The term 'embryo', similar to the terms 'infant' and 'adolescent', refers to a determinate and enduring organism at a particular stage of development.

Do fetuses respond to stimuli?

The fetus is clearly able to respond to various external stimuli. The nature of the response is related to gestational age, intact neurologic function, and also the behavioral state of the fetus. The fetus who responds to the stimulus with an acceptable acceleration is uniformly nonacidotic.

What happens to the baby in the three trimesters of pregnancy?

During this period, your baby's body structure and organ systems develop. Most miscarriages and birth defects occur during this period. Your body also undergoes major changes during the first trimester. These changes often cause a variety of symptoms, including nausea, fatigue, breast tenderness and frequent urination.

How does a human develop from a zygote to a full term baby?

The zygote spends the next few days traveling down the fallopian tube. During this time, it divides to form a ball of cells called a blastocyst. A blastocyst is made up of an inner group of cells with an outer shell. The inner group of cells will become the embryo.

At what week during pregnancy do brain waves form?

The early signs of a brain have begun to form. Even though the fetus is now developing areas that will become specific sections of the brain, not until the end of week 5 and into week 6 (usually around forty to forty-three days) does the first electrical brain activity begin to occur.

What is the difference between antenatal and prenatal?

Pre-Pregnancy care is the health care a woman gets before she becomes pregnant. Prenatal care is the health care a woman gets during pregnancy.

When Should prenatal vitamins be taken?

When do I need to start taking prenatal vitamins? Start taking folic acid at least 1 month before you start trying to get pregnant. The first few weeks of pregnancy are a really important time for fetal health and development. Taking folic acid and other prenatal vitamins can help reduce the risk of some birth defects.

What does prenatal do to your body?

It takes a lot of vitamins and minerals to grow a baby! Prenatal vitamins give you extra amounts of these three key nutrients for pregnant women: Folic acid helps your baby's brain and spinal cord develop correctly. This nutrient reduces the risk of serious birth defects called spina bifida and anencephaly.

What is included in prenatal care?

Prenatal Care. Prenatal visits to a health care provider usually include a physical exam, weight checks, and providing a urine sample. Depending on the stage of the pregnancy, health care providers may also do blood tests and imaging tests, such as ultrasound exams.

What is the meaning of prenatal care?

Prenatal care, also known as antenatal care, is a type of preventive healthcare. Its goal is to provide regular check-ups that allow doctors or midwives to treat and prevent potential health problems throughout the course of the pregnancy and to promote healthy lifestyles that benefit both mother and child.

Where does fertilization occur?

fallopian tubes

How soon can pregnancy be confirmed by early pregnancy factor?

Commercially available test kits have been available to detect early conception factor (ECF) in serum and milk from as early as 3 days after artificial insemination, although more accurate results are obtained if samples are taken later, at 7 to 8 days (Adams & Jardon 1999, Threlfall & Bilderbeck 1999).

What stage does cleavage occur?

Cleavage is holoblastic and rotational. At the eight-cell stage, having undergone three cleavages the embryo goes through some changes. At this stage the cells begin to tightly adhere in a process known as compaction..

What is neonatal stage of development?

The neonatal period (birth to 1 month) is a time of extensive and ongoing system transition from uterine environment to external world, this includes the initial period after birth which is referred to as the perinatal period.