Which is the longest stage of prenatal development quizlet?
What is the longest stage of prenatal development? The fetal stage.
Which period of prenatal development is shortest?
The germinal stage of development Summary. The germinal stage of development is the first and shortest of the stages of the human lifespan. It lasts roughly eight to nine days, beginning with fertilization and ending with implantation in the endometrium of the uterus, after which the developing organism is called an embryo.
What is the third and longest stage of prenatal development?
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.
Which is the last major stage of prenatal development?
There are three stages of prenatal development: germinal, embryonic, and fetal. Let's take a look at what happens to the developing baby in each of these stages.
Which of the three stages is the longest quizlet?
1. The first stage is the longest of the three stages. Uterine contractions are 15 to 20 minutes apart at the beginning and last up to a minute.
Which of the following is a major stage of prenatal development and spans the time from fertilization to implantation in the wall of the uterus?
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.
How long is embryonic stage?
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 is the first and longest stage of labor?
During the 1st stage of labour, contractions make your cervix gradually open (dilate). This is usually the longest stage of labour. At the start of labour, your cervix starts to soften so it can open. This is called the latent phase and you may feel irregular contractions.
How long is the embryonic stage?
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.
Which stage of labor is typically the longest?
During the 1st stage of labour, contractions make your cervix gradually open (dilate). This is usually the longest stage of labour.
Which of the three stages is longest?
- The first stage is the longest of the three stages. …
- The second birth stage begins when the baby's head starts to move through the cervix and the birth canal.
- Afterbirth is the third stage, at which time the pla- centa, umbilical cord, and other membranes are detached and expelled.
Which stage of prenatal development is the shortest Germinal fetal embryonic zygote?
2: The germinal stage of human development begins with fertilization in a Fallopian tube and ends with implantation in the uterus. The germinal stage of development is the first and shortest of the stages of the human lifespan.
How long is the zygote stage?
about four days The zygote phase is brief, lasting only about four days. Around the fifth day, the mass of cells becomes known as a blastocyst.
What are the 4 stages of embryonic development in order?
The four stages of embryonic development are morula, blastula, gastrula and organogenesis.
What are the three phases of prenatal development?
Prenatal development is the process in which an embryo or fetus (or fetus) gestates during pregnancy. Normal prenatal development lasts about 38 weeks and is divided into three stages: germinal, embryonic, and fetal.
Which is the longest stage of labor quizlet?
The transition phase is the longest phase of stage 1 and contractions are very intense and long in duration.
What is the longest part of labor?
The first stage The first stage is the longest part of labor and can last up to 20 hours. It begins when your cervix starts to open (dilate) and ends when it is completely open (fully dilated) at 10 centimeters.
What is latent phase in pregnancy?
The first phase of the first stage of labor is called the latent phase, when contractions are becoming more frequent (usually 5 to 20 minutes apart) and somewhat stronger. However, discomfort is minimal. The cervix dilates (opens approximately three or four centimeters) and effaces (thins out).
Which stage of prenatal development is the longest 2 points?
the fetal period The longest period of prenatal development is the fetal period which begins at the 9th week after conception and lasts until birth.
How long is the fetal stage?
After the embryonic stage, the fetal stage begins and your baby is called a fetus. This stage runs from the 11th week until birth.
How long does the blastocyst stage last?
The blastocyst stays in their uterus for several days before it implants in the inner lining of their uterine wall (endometrium). It continues to make new cells, which separate into layers. About 10 to 12 days after fertilization, the blastocyst develops into an embryo.
How long does the fetal stage last?
A fetus is a prenatal human being between the embryonic stage and birth. The fetal stage extends from the beginning of the ninth week after fertilization to about 38 weeks after fertilization, which is the average time of birth. The fetal stage lasts a total of approximately 30 weeks.
Which is typically the longest stage of childbirth?
First Stage or Early Labor The first stage of labor, also called early labor, is by far the longest. It begins at the onset of labor and continues until the cervix is fully dilated.
Which is the shortest phase of labor quizlet?
Monitor mom's vitals and FHR of baby. Leads into Stage 2 where the baby will be delivered. It is the shortest phase (lasts 30min-1hr) but the most intense.
What is the longest stage of labor?
During the 1st stage of labour, contractions make your cervix gradually open (dilate). This is usually the longest stage of labour.
What is prolonged first stage of labour?
We defined prolonged first stage of labour as crossing the action line of the partograph in the first stage of labour, which is after the latent phase and before reaching full dilatation of the cervix.
What are three prenatal stages?
Prenatal development is the process in which an embryo or fetus (or fetus) gestates during pregnancy. Normal prenatal development lasts about 38 weeks and is divided into three stages: germinal, embryonic, and fetal.
How long is zygote stage?
The zygote phase is brief, lasting only about four days. Around the fifth day, the mass of cells becomes known as a blastocyst.
What is morula and blastocyst?
Cleavage, Morula, Blastocyst Following fertilization, cleavage occurs. This consists of a rapid succession of mitotic divisions that produce a mulberry-like mass known as a morula. Fluid is secreted by the outer cells of the morula, and a single fluid-filled cavity develops, known as the blastocyst cavity.
What is pre natal stage?
The prenatal period is the period of time before birth. A woman's nutritional needs are high during this time. Because a woman may not know that she is pregnant, she may be poorly nourished. She may also consume alcohol or caffeine in excess, which may affect the growing embryo or fetus.