Nodus Ranvier

Nodus Ranvier adalah bagian atau titik pada akson yang tidak terbungkus selubung mielin. Nodus Ranvier memiliki diameter sekitar 1 mikrometer. Nodus Ranvier ditemukan oleh Louis-Antoine Ranvier. Selubung mielin berfungsi sebagai pelindung akson dan membungkusnya, tetapi selubung ini tidak membungkus secara keseluruhan, dan yang tidak terbungkus merupakan Nodus Ranvier. Nodus Ranvier berfungsi untuk mempercepat impuls saraf.

Louis Antoine Ranvier (1835-1922), penemu selubung Mielin dan Nodus Ranvier.


Sumber utamaSunting

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Sumber umumSunting

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  • Eftekharpour E, Karimi-Abdolrezaee S, Wang J, El Beheiry H, Morshead C, Fehlings MG. Myelination of congenitally dysmyelinated spinal cord axons by adult neural precursor cells results in formation of nodes of Ranvier and improved axonal conduction. Journal of Neuroscience, 2007 Jun 20; 27(25):6605-6.
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  • Nie DY, Ma QH, Law JW, Chia CP, Dhingra NK, Shimoda Y, Yang WL, Gong N, Chen QW, Xu G, Hu QD, Chow PK, Ng YK, Ling EA, Watanabe K, Xu TL, Habib AA, Schachner M, Xiao ZC. Oligodendrocytes regulate formation of nodes of Ranvier via the recognition molecule OMgp. Journal of Neuron Glia Biology, 2006;2:151-164.
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  • RANVIER, L.-A. (1871). Contributions a lOhistologie et a la physiologie des nerf peripheriques. Comptes Rendus del OAcademie Sciences (Paris) 73, 1168.1171.
  • ROBERTSON, J. D. (1957). The ultrastructure of nodes of Ranvier in frog nerve fibres. Journal of Physiology (London)137, 8p.9p.
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Pranala luarSunting