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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Oblique dendrite ： ウィキペディア英語版 Oblique dendrite An oblique dendrite is a dendrite that branches from an apical dendrite which emerge from the apex of a pyramidal cell. Oblique dendrites typically branch one to two times before terminating. Dendrites are extensions of the cell body of a neuron. ==Growth and Development== The growth and development of oblique dendrites in rats has been linked to the type of environment, or condition, they are placed in. This is also known as environmental enrichment. The three types of conditions used in studies are an enriched conditioned, standard condition, and impoverished condition. The enriched condition contains mazes, an exercise wheel, other rats, and toys. The standard condition generally has a wheel for voluntary exercise and other rats. The impoverished condition only contains fellow rats. Animals placed in an enriched environment had heavier, thicker cortexes and an increase in the number of dendritic branches (including oblique dendrites) in the hippocampus than the standard or impoverished condition.〔Watson, Neil, Breedlove, Marc "The Mind's Machine: Foundations of Brain and Behavior" Sinauer Associates, 2012, Chapter 13: Memory, Learning, and Development〕〔van Praag, Henriette, Gerd Kempermann, and Fred H. Gage. "Neural consequences of environmental enrichment." Nature Reviews Neuroscience 1.3 (2000): 191-198.〕 This phenomenon is known as neuroplasticity. Furthermore, the enriched condition may show in increase in monoamine neurotransmitter release such as serotonin and noradrenaline which have been linked to synaptic plasticity and learning.〔van Praag, Henriette, Gerd Kempermann, and Fred H. Gage. "Neural consequences of environmental enrichment." Nature Reviews Neuroscience 1.3 (2000): 191-198.〕 This is important because an increase in oblique dendrites and dendritic branching allows for increased neurotransmitter uptake. Environmental enrichment is crucial in early brain development due to increase formation of synapses, or synaptogenesis. This results in an increase in oblique dendrites and dendritic branching. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oblique dendrite」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.