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  • 240022139503661200110727475157653195392PublicAssets/3740Nodes of Ranvier are short gaps in the myelin sheath surrounding myelinated nerve cells (axons). Myelin insulates axons, and the node of Ranvier is where the axon is exposed to the extracellular environment, allowing for the transmission of action potentials at these nodes via ion flows between the inside and outside of the axon. The image shows a cross-section through the node, with the surrounding extracellular matrix encasing and supporting the axon shown in cyan.Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)Mark Ellisman and Tom Deerinck, National Center for Microscopy and Imaging ResearchPhotograph

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    Transmission electron microscopy showing cross-section of the node of Ranvier

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    Nodes of Ranvier are short gaps in the myelin sheath surrounding myelinated nerve cells (axons). Myelin insulates axons, and the node of Ranvier is where the axon is exposed to the extracellular environment, allowing for the transmission of action potentials at these nodes via ion flows between the inside and outside of the axon. The image shows a cross-section through the node, with the surrounding extracellular matrix encasing and supporting the axon shown in cyan.

    Source

    Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)

    Credit Line

    Mark Ellisman and Tom Deerinck, National Center for Microscopy and Imaging Research

    Record Type

    Photograph

    ID

    3740

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