Question

which structure from embryo after fertilization​

Answer 1

Answer:

during the first 8 or 9 days after conception, the cells that will eventually form the embryo continue to divide. at the same time, the hollow structure in which they have arranged themselves, called a blastocyst, is slowly carried toward the uterus by tiny hair-like structures in the fallopian tube, called cilia.

Answer 2

Answer:

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Explanation:

As a fertilized human egg divides, it first becomes a solid ball of cells, the morula. Next, about five days after fertilization, it becomes a hollow ball, the blastocyst. The cells of the outer layer of the blastocyst eventually form part of the placenta.

CORRECT ORDER:-

Cell division continues at a rapid rate during the approximately week-long journey from fallopian tube to uterus wall. The cells develop into what is known as a blastocyst. The blastocyst is made up of three layers, each of which develops into different structures in the body.

1. Ectoderm: Skin and nervous system
2. Endoderm: Digestive and respiratory systems
3. Mesoderm: Muscle and skeletal systems

Embryonic Stage:-

At this point, the mass of cells is now known as an embryo. The beginning of the third week after conception marks the start of the embryonic period, a time when the mass of cells becomes distinct as a human. The embryonic stage plays an important role in the development of the brain.

Fetal Stage:-

Once cell differentiation is mostly complete, the embryo enters the next stage and becomes known as a fetus. The fetal period of prenatal develop marks more important changes in the brain. This period of development begins during the ninth week and lasts until birth. This stage is marked by amazing change and growth.

During the third month of gestation, the sex organs begin to differentiate. By the end of the month, all parts of the body will be formed. At this point, the fetus weighs around three ounces. The fetus continues to grow in both weight and length, although the majority of the physical growth occurs in the later stages of pregnancy.