What are the stages of embryo?
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.
How an embryo is formed?
First, the zygote becomes a solid ball of cells. Then it becomes a hollow ball of cells called a blastocyst. Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes.
What is the difference between a blastocyst and an embryo?
After the implantation of it in the uterine wall, the blastocyst is referred to as the embryo. The main difference between blastocyst and embryo is that blastocyst is a thin-walled hollow structure from which the embryo arises whereas embryo is the early stages of the placental development from which the fetus arises.
What is the difference between Foetus and an embryo?
The embryo is the developing organism from fertilization to the end of the eighth week of development. The foetus is the developing organism from the beginning of the third month to birth.
What will happen after implantation?
If the implantation is successful, spotting or light cramping can be experienced. If unsuccessful, your period will start. Some of the common post embryo implantation symptoms are listed below: Cramping and spotting: A brown vaginal discharge for 1-2 days is experienced after a successful implantation.
What’s the difference between an embryo and a fetus?
The distinction between embryo and fetus is made based on gestational age. An embryo is the early stage of human development in which organs are critical body structures are formed. An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization of the egg.
What are the four stages of embryonic development?
Briefly, embryonic development have four stages: the morula stage, the blastula stage, the gastrula stage, and the neurula stage. Prior to implantation, the embryo remains in a protein shell, the zona pellucida , and undergoes a series of cell divisions, called mitosis.
What is the proper order of embryonic development?
The stages of embryonic development in the correct order; 1. egg fertilized to form a zygote 2. cell division in a zygote to form a morula 3. cell division to form a blastocyst 4. differentiation of cells in the blastocyst 5. development of tissues 6. development of organs
When does the fetus become a baby?
An embryo officially becomes a fetus at the end of the embryonic period, which is the 8th week after conception, the 10th week of pregnancy. After that, the fetal period begins, which is the latter stages of pregnancy.