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axoplasm
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axoplasm
axoplasm Anat. (ˈæksəʊplæz(ə)m) [f. axo- + Gr. πλάσµα (cf. plasm 4).] The substance that surrounds the fibrils of an axon.1900 in Dorland Med. Dict. 1937 Nature 13 Feb. 292/2 If a giant nerve fibre [of a cephalopod] is cut, the axoplasm flows out from the sheath, showing it to be a viscous fluid. 19...
Oxford English Dictionary
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Axon
This axonal transport is provided for in the axoplasm by arrangements of microtubules and intermediate filaments known as neurofilaments. Axonal transport
The axoplasm is the equivalent of cytoplasm in the cell. Microtubules form in the axoplasm at the axon hillock.
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多极神经元 - 维基百科,自由的百科全书
多极神经元也指派 蘭氏結 軸突末梢 Axoplasm Axoplasm Axolemma Axolemma Neurofibril/neurofilament 尼氏体 Dendritic spine Apical dendrite Apical dendrite Basal dendrite Basal dendrite General somatic afferent fibers General visceral afferent fibers Special somatic afferent Special visceral afferent fibers Axon#types Type Ia sensory fiber
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Axonal transport
mitochondria, lipids, synaptic vesicles, proteins, and other organelles to and from a neuron's cell body, through the cytoplasm of its axon called the axoplasm Consequences of interruption
Whenever axonal transport is inhibited or interrupted, normal physiology becomes pathophysiology, and an accumulation of axoplasm
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microtrabecular
microtrabecular, a. Cytol. (ˌmaɪkrəʊtrəˈbɛkjʊlə(r)) [f. micro- 4 + trabecular a.] Pertaining to or designating a lattice of very fine filamentous strands of protein believed to permeate the cellular cytoplasm and to control the transport of molecules within a cell.1976 Wolosewick & Porter in Amer. J...
Oxford English Dictionary
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Muscarinic antagonist
Uptake of acetylcholine in axoplasm is prevented and the presynaptic nerve releases more acetylcholine into the synapse, which initially causes bradycardia
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Why the length constant of passive current flow isn't depend on the membrane capacitance? I read that the equation for the length constant for passive conductance along a neuron depend on the resistance of the plasma ...
Length constants are defined in the 'steady state' regime of constant voltage; capacitance is important for time-dependent electrical functions but disappears in the steady state. In a real neuron, where you have other time-dependent (dynamic) features like ion channel opening, time constants and le...
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Diffuse axonal injury
damage, destroy mitochondria, and trigger phospholipases and proteolytic enzymes that damage Na+ channels and degrade or alter the cytoskeleton and the axoplasm
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neuro-
neuro- (ˈnjʊərəʊ) combining form of Gr. νεῦρον nerve, used in a number of scientific terms, chiefly Anat. and Path., as neuroaˈnatomy, the anatomy of the nervous system; hence ˌneuroanaˈtomical a., neuroaˈnatomist; neurobiˈology, the branch of biology which deals with nervous tissue; hence ˌneurobio...
Oxford English Dictionary
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Cable theory
The resistance in series along the fiber is due to the axoplasm's significant resistance to movement of electric charge. Similarly, in an axon, some of the current traveling longitudinally through the axoplasm will escape through the membrane.
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غمد المحور العصبي
يشير مصطلح الaxoplasm المماثل إلى السيتوبلازم للمحور العصبي.
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Perseus Books Group
Avalon Publishing Group
Axoplasm
Black Square Editions
Blue Moon Books
Carroll & Graf Publishers — acquired in 1998, folded in 2007
Four Walls Eight Windows
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radio-
radio- (ˈreɪdɪəʊ) 1. Comb. form of radius n. Anat. Belonging to the radius in conjunction with some other part, as ˌradio-ˈcarpal, -ˈdigital, -ˈhumeral, -ˈmuscular, -ˈpalmar, -ˈulnar adjs.1831 R. Knox Cloquet's Anat. 133 The external lateral ligament of the radio-carpal articulation. 1845 Todd & Bow...
Oxford English Dictionary
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Length constant
current from the outside of the membrane to the inside, and vice versa), ri is the axial resistance (the force that impedes current flow through the axoplasm
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神经科学
许多神经元会挤出一条称为轴突的细长Axoplasm丝,它可能延伸到身体的较远部位,并能够快速携带电信号,从而影响其他神经元、肌肉或腺体在其终止点的活动。 神经系统从相互连接的神经元集合中出现。
脊椎动物的神经系统可以分为两部分:中枢神经系统(定义为大脑和脊髓),和周围神经系统。
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