What is the longest stage of prenatal development quizlet?
What is the longest stage of prenatal development? The fetal stage.
Which of the following is the last and longest stage in prenatal development?
the fetal stage The last stage of prenatal development is the fetal stage, which lasts from two months after conception until birth. About one month into this stage, the sex organs of the fetus begin to form. The fetus quickly grows as bones and muscles form, and it begins to move inside the uterus.
What are the stages of prenatal development in order?
From beginning as a one-cell structure to your birth, your prenatal development occurred in an orderly and delicate sequence. There are three stages of prenatal development: germinal, embryonic, and fetal.
Which stage of prenatal development is the shortest?
The germinal stage of development The germinal stage of development is the first and shortest of the stages of the human lifespan.
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.
What is germinal 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.
Is the fetal stage the longest?
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 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.
How long is the fetal stage?
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.
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.
How long is the germinal 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.
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.
What is the first stage of prenatal development quizlet?
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.
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.
What is period of zygote?
The zygote phase is brief, lasting only about four days. Around the fifth day, the mass of cells becomes known as a blastocyst.
Which stage is the longest stage of labor?
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.
What are the 4 stages of embryonic development in order?
The four stages of embryonic development are morula, blastula, gastrula and organogenesis.
What is the last major step of embryonic development?
Fetal Development. By the twelfth week of fertilization the embryo moves into the final stage of development called the fetal stage. By now, the fetus has formed all of the organs and structures necessary for a baby, but those organs still need to grow and develop.
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 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.
What is the blastocyst stage of development?
Three days after fertilization, a normally developing embryo will contain about six to 10 cells. By the fifth or sixth day, the fertilized egg is known as a blastocyst — a rapidly dividing ball of cells. The inner group of cells will become the embryo. The outer group will become the cells that nourish and protect it.
How many weeks is the zygote stage?
Zygotes divide through a process known as mitosis, in which each cell doubles (one cell becomes two, two becomes four, and so on). This two-week stage is known as the germinal period of development and covers the time of fertilization (also called conception) to the implantation of the blastocyst in the uterus.
What is the duration of prenatal stage in days?
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.
How long does the embryonic stage last?
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 prenatal development is the shortest quizlet?
Terms in this set (3)
- germinal stage. the first-and shortest-stage of the prenatal period, which takes place during the first 2 weeks following conception.
- embryonic stage. the period from 2-8 weeks following fertilization during which significant growth occurs in the major organs and body systems.
- fetal stage.
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 shortest stage in labor?
In the third stage of labor, the placenta is delivered. The placenta grows in your uterus and supplies your baby with food and oxygen through the umbilical cord. This stage is the shortest and usually doesn't take more than 20 minutes.
What is the second 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.
What is the shortest stage of labor?
In the third stage of labor, the placenta is delivered. The placenta grows in your uterus and supplies your baby with food and oxygen through the umbilical cord. This stage is the shortest and usually doesn't take more than 20 minutes.
What is morula stage?
A morula (Latin, morus: mulberry) is an early-stage embryo consisting of a solid ball of cells called blastomeres, contained within the zona pellucida.