Abstract
The perineurium is composed of multiple concentric single-cell layers enclosing individual nerve fascicles. Each layer has a thickness equivalent to the width of a perineurial cell. Groups of these cells join by means of tight junctions and desmosomes to form layers that function as a barrier against diffusion of particles across them. Perineurial internal layers have more of these specialized unions among perineurial cells, which are proximal to nerve fascicles.
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Reina, M.A., Colman Peyrano, E., Diamantopoulos, J., De Andrés, J.A. (2015). Ultrastructure of the Perineurium. In: Reina, M., De Andrés, J., Hadzic, A., Prats-Galino, A., Sala-Blanch, X., van Zundert, A. (eds) Atlas of Functional Anatomy for Regional Anesthesia and Pain Medicine. Springer, Cham. https://doi.org/10.1007/978-3-319-09522-6_4
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DOI: https://doi.org/10.1007/978-3-319-09522-6_4
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