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Updated: Jul 23, 2026

An Ex Vivo Laser-induced Spinal Cord Injury Model to Assess Mechanisms of Axonal Degeneration in Real-time
11:18

An Ex Vivo Laser-induced Spinal Cord Injury Model to Assess Mechanisms of Axonal Degeneration in Real-time

Published on: November 25, 2014

長い軸索を持つニューロンの問題

J B Cavanagh

    Lancet (London, England)
    |June 9, 1984
    PubMed
    まとめ

    長いニューロンは,赤血球と同じような物流上の課題に直面し,特にエネルギーや抗酸化物質が低くなるとそうである. これらの問題は,長い神経繊維の分解につながり,赤血球疾患と神経学的状態を結びつける可能性があります.

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    関連する概念動画

    Neuron Structure01:31

    Neuron Structure

    Overview
    Action Potentials01:41

    Action Potentials

    Overview
    Neuron Structure01:30

    Neuron Structure

    Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
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    The neuronal cell body—the soma— houses the nucleus and organelles vital to cellular...
    Neurons: The Axon01:21

    Neurons: The Axon

    Axons are long, cytoplasmic processes of nerve cells capable of propagating electrical impulses known as action potentials. The cytoplasm or axoplasm of an axon contains neurofibrils, neurotubules, small vesicles, lysosomes, mitochondria, and various enzymes, all encased within the axolemma, the plasma membrane of the axon.
    The axon attaches to the cell body at a cone-shaped elevation called the axon hillock. The initial part of the axon, closest to the hillock, is known as the initial segment.
    Action Potential01:14

    Action Potential

    Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
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    Neurons as Communicators of the Brain

    Neurons, the fundamental units of the brain and nervous system, function as the primary transmitters of information throughout the body. Their ability to communicate through electrical and chemical signals is vital for every bodily function, from regulating the heartbeat to processing complex thoughts. Each neuron has three main components: the cell body (soma), dendrites, and an axon, each specialized to facilitate swift and efficient neural communication.
    Cell Body
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