Gap Junctions and Hemichannels

Bruce R. Ransom and Zu-Cheng Ye

in Neuroglia

Published on behalf of Oxford University Press

Published in print October 2004 | ISBN: 9780195152227
Published online September 2013 | e-ISBN: 9780199865024 | DOI:
                      Gap Junctions and Hemichannels

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This chapter focuses on gap junctions and “half” gap junctions called hemichannels. The channels comprising a gap junction are large-diameter aqueous pores that extend from one cell, across the extracellular space, into an adjacent cell. These channels allow all inorganic ions and small organic molecules to diffuse freely from the interior of one cell into the interior of another cell. The general features of gap junctions and gap junctions in glial cells are discussed.

Keywords: gap junction; channel; glial cells; half gap junctions; extracellular space

Chapter.  9810 words.  Illustrated.

Subjects: Neuroscience

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