BIOL 426 Notes Chapter 3 - Biology 426 Chapter 3 Notes...

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Biology 426 Chapter 3 Notes Genesis and Migration - The sources of all these neurons and glia are the cells of the neural tube - Neurogenesis and gliogenesis, the generation of neurons and glia during development, occurs in many different ways in the various regions of the embryo. - Part of the complex process of making the brain includes the proper migration of neurons and glia from their site of origin to their final position in the adult brain. - Precisely orchestrated cell movements or migrations are an integral part of what is collectively known as histogenesis in the brain - The number of cells generated in the developing nervous system is likely regulated at several levels. - the production of neurons or glia may be regulated by apparent intrinsic limits to the number of progenitor cell divisions essentially, a “cellular clock.” - level of proliferation and ultimately the number of cells generated can also be controlled by extracellular signals, acting as mitogens, promoting progenitor cells to reenter the cell cycle and mitotic inhibitors that induce progenitor cells to exit
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This note was uploaded on 08/26/2011 for the course BIOL 426 taught by Professor Profgongchen during the Spring '08 term at Pennsylvania State University, University Park.

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BIOL 426 Notes Chapter 3 - Biology 426 Chapter 3 Notes...

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