Which prenatal stage of pregnancy is the longest?
What pregnancy trimester is the longest? The third trimester is considered to be the longest trimester of pregnancy. This trimester begins in week 28 of pregnancy and lasts until you give birth. Most women begin labor around week 40 of pregnancy, while some pregnancies may take longer.
Which is the longest stage of prenatal development quizlet?
What is the longest stage of prenatal development? The fetal stage.
Which development stage is the longest?
The fetal stage is the longest stage of development and during this stage the fetus grows dramatically in size.Dec 15, 2021
What is the last 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.Jun 1, 2020
Which of the three stages is the longest psychology?
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 is the first stage of prenatal development?
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.Oct 8, 2020
What are the three stages of prenatal development?
This union marks the beginning of the prenatal period, which in humans encompasses three distinct stages: (1) the pre-embryonic stage, the first two weeks of development, which is a period of cell division and initial differentiation (cell maturation), (2) the embryonic period, or period of organogenesis, which lasts ...
How long is the embryonic stage?
Defining the Embryonic Stage The embryonic stage lasts through the eighth week following fertilization, after which the embryo is called a fetus. The embryonic stage is short, lasting only about seven weeks in total, but developments that occur during this stage bring about enormous changes in the embryo.Sep 4, 2021
How long is the fetal stage?
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.Sep 4, 2021
What are the four stages of prenatal development?
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. Keep in mind that this is different than the three trimesters of pregnancy.
What is prenatal stage of development?
There are three stages of prenatal development: germinal, embryonic, and fetal.
What are the 4 stages of embryonic development?
1.1 Fertilization.1.2 Cleavage.1.3 Blastulation.1.4 Implantation.1.5 Embryonic disc.