| 单词 | ranvier | 
| 释义 | Ranviern. Histology.    node of Ranvier  n. 		(also Ranvier node, Ranvier's node)	 any of the gaps in the myelin sheath that occur between neighbouring Schwann cells or oligodendrocytes along a myelinated nerve fibre. ΘΚΠ the world > life > the body > nervous system > nerve > parts of nerves > 			[noun]		 > interruption in myelin node of Ranvier1876 1876    M. Foster  & J. Langley Course Elem. Pract. Physiol. 58  				Observe..the break in the medullary sheath (Ranvier's node) between each two nuclei. 1885    Encycl. Brit. XIX. 23/2  				The medullary sheath shows at certain intervals interruptions called the ‘nodes of Ranvier’. 1912    J. D. Lickley Nerv. Syst. ii. 11  				On the outside of the medullary sheath..is a thin structureless membrane known as the neurilemma... It is a continuous sheath and is not interrupted at the nodes of Ranvier. 1950    Exper. Cell Res. 1 310  				Membranous sheaths..interrupted at periodic intervals of 1–3 mm by constrictions or Ranvier nodes. 1979    Jrnl. Amer. Med. Assoc. 23 Mar. 1248/3  				This resulted in displacement and obstruction of Ranvier's nodes, producing a conduction block. 2002    T. Shimoda Fourth Treasure 		(2003)	 153  				The sheath is not continuous; small gaps called nodes of Ranvier act like booster stations, increasing the strength of the signal. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022). < | 
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