Definition of node of Ranvier in English:

node of Ranvier

(also Ranvier's node)

noun

Anatomy
  • A gap in the myelin sheath of a nerve, between adjacent Schwann cells.

    • ‘The myelin sheath around an axon is interrupted at regular intervals known as the nodes of Ranvier.’
    • ‘Another node of Ranvier more clearly shows the dark axon as it continues through the node.’
    • ‘Myelin is wrapped around the axon in building blocks interrupted by distinct gaps, called Ranvier's nodes.’
    • ‘Mammalian vertebrates may also have the morphological equivalent of the septate junction where Schwann cells link to nerve axons at the node of Ranvier.’
    • ‘Subsequently, the wire is moved until the bared part is positioned at the next node of Ranvier, the voltage at the neural electrode is recorded again, and so on.’

Origin

Late 19th century: named after Louis Antoine Ranvier (1835–1922), French histologist.

Pronunciation

node of Ranvier

/ˌnōd əv ˈränvyā/