organogenesis

What is organogenesis? Complete Guide.

How do cells into organogenesis?

During fetal development, three microbial layers, the endoderm, the mesoderm, and the ectoderm, form. These microbial layers make up different parts of the developing body. The endoderm forms the gastrointestinal tract and its organs, the muscles and bones of the mesoderm, as well as the cardiovascular and urogenital organs, the ectoderm epidermis, and the nerve tissues.

The process of organogenesis is the formation of organogenesis during fetal development. This is an event that involves the transfer and differentiation of cells and involves the formation of a “primordium” that undergoes histogenesis until the organogenesis is complete.

How does it grow in the endoderms?

The endoderm is a microbial layer that grows in the stomach and glands, in other organs that are excreted from the stomach.

The formation of the “intestinal system”

In the endoderm and mesoderm, a tube is formed from a flat layer of cells. To form the intestinal system, endoderm cells form a semicircular appendage, which emerges from the posterior portion of the developing embryo, the intestinal portal (AIP). This is delayed and another crescent-like portal (CIP) is created and moved on.

AIP and CIP are found in the yolk sac, where cells from the posterior end of the fetus form part of the intestinal tube to the yolk sac, and the caudal portion of the yolk sac from the posterior end. . They form the ventral part of the intestine, the ventral part of the intestine, the middle endoderm cells. Studies in mice have shown that GATA4 is an important replicating factor in intestinal formation.

Organ formation

With the formation of the intestine, the cells begin to swell and proliferate, forming glands and organs. These include the thyroid and parathyroid glands, thymus gland, lungs, liver and pancreas.

The first process is the thickening of the epithelial layer and then the thickening of the epithelial layer, which can travel from the digestive system to the mesenchymal cells (glands formed by branching arteries, ie thyroid) or through the canal to the intestinal tract. Liver, gallbladder). ). , Pancreas).

Once the location of these organs and glands is determined by changes in the aforementioned epithelial layer, organs such as cell proliferation / death, adhesion and motility come into play.

Heart formation

The heart exits the mesoderm and is the first fully functioning organ of the fetus. The heart structure is maintained in all verbs. Formation of heart tube, right ring and extension of heart tube, formation of heart chambers and valves.

Cardiac tube formation

As with the endoderm in the limbs, the initial process of heart formation is the formation of the heart tube. Baby cells migrate slightly to form the lateral mesoderm.

Heart differences and specifications are found in this region, especially in the anterior lateral splenic mesoderm. It is regulated by a number of signaling molecules, including the transcription factor that causes the formation of the heart’s crescent.

When the skin is closed, the shape of the heart’s crescent moon changes so much that it turns into a tube of the heart that contains the inner endocardial layer and the outer myocardium.

Extension and extension of the heart ring

Once formed, the heart tube bends to the right – for the first time in the fetus, a right and left arrow is formed. This is not due to the proliferation of cells, but an increase in the length of the heart tube as a result of the proliferation of heart cells.

Formation of heart chambers

Control of many genes leads to the formation of heart chambers. Cardiac balloon “hair morphogenesis” causes the development of external curves, resulting in the formation of heart chambers. This is explained by maintaining a low growth rate in the inner circle.

Location and formation of heart valves

As the heart valves expand, so do the heart chambers.

Another stage of heart development necessary for life in life is the division of the lungs and the circulatory system, which results from the formation of septum in the heart.

In short, the ventricular septum is formed by a combination of the excretory duct, the atrioventricular septum, and the atrial septum.

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