Download Brain Development (Gray Matter) by Lakshmi Bangalore PDF

By Lakshmi Bangalore

Introduces easy mind anatomy and mind improvement to highschool scholars. This ebook discusses the molecular foundation of principal apprehensive procedure specification, ranging from neural induction and development formation to neural migration, axon information, and synapse formation.

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By Lakshmi Bangalore

Introduces easy mind anatomy and mind improvement to highschool scholars. This ebook discusses the molecular foundation of principal apprehensive procedure specification, ranging from neural induction and development formation to neural migration, axon information, and synapse formation.

Show description

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Additional info for Brain Development (Gray Matter)

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The timing of myelination is so precise that the stage of human development can be determined simply by examining the extent of myelination. 1). Oligodendrocytes share a common ancestry with neurons, in that they originate from the same pool of neural stem cells. 1 Oligodendrocytes produce an insulating material called myelin around axons of the central nervous system. A single oligodendrocyte can myelinate many axons. Above is a scanning electron micrograph of an oligodendrocyte. begins shortly after neurogenesis when most of the neurons have taken their place in the developing nervous system.

Abnormal specification of the overall body plan, disruption of neural induction, improper specification of cell fate, or glitches during formation of the neural tube, can result in severe defects in nervous system development. ■ Learn more about the contents of this chapter Search the Internet for embryonic development, Hans Spemann, and cell fate. 3 Neurogenesis: Birth, Migration, and Differentiation of Neurons W ith successful closing of the neural tube, dramatic changes occur within its walls.

During the formation of the neuromuscular synapse, molecules released by the neuron start a cascade of events that lead to the firing of a 51 52 Brain Development nerve impulse by the target cell. Although the process of synapse formation in the brain appears to be more complex than in the peripheral nervous system, scientists think that it may follow a similar sequence of events as in the peripheral nervous system. Synapse formation is often accompanied by synapse refinement in which excess, unwanted, or inappropriate connections are eliminated.

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