short note on organongenesis
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The cells of each of the three germ layers undergo differentiation, a process where less-specialized cells become more-specialized through the expression of a specific set of genes. Cell differentiation is driven by cell signaling cascades[2]. Differentiation is influenced by extracellular signals such as growth factors that are exchanged to adjacent cells which is called juxtracrine signaling or to neighboring cells over short distances which is called paracrine signaling.[3] Intracellular signals consist of a cell signaling itself (autocrine signaling), also play a role in organ formation. These signaling pathways allows for cell rearrangement and ensures that organs form at specific sites within the organism.[1] The organogenesis process can be studied using embryos and organoids
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Organogenesis is the process by which three germ layers turn into the internal organs of animals. The outer layer is called ectoderm; the middle layer, the mesoderm; and the inner layer, the endoderm. Human organogenesis starts off very similarly to other organisms. Eventually, though, it becomes more complex, making us humans the way we are rather than like other organisms.
Animals that lay eggs, called amniotes, have a similar organogenesis as placental mammals, those with a placenta like humans. There are a few differences, however.
During organogenesis we see three different kinds of morphological changes, or changes in form. There are folds, splits, and dense clustering of cells in the embryo. These will give rise to our organs. We see this occurring in humans somewhere around the third to eighth week of gestation. Please mark it as brainliest if u like it