Hiérarchie anatomique

Anatomie générale > Muscle lisse

Traductions

Description

Smooth muscle is an involuntary non-striated muscle. It is divided into two sub-groups; the single-unit (unitary) and multiunit smooth muscle.

  • Within single-unit smooth muscle tissues, the autonomic nervous system innervates a single cell within a sheet or bundle and the action potential is propagated by gap junctions to neighboring cells such that the whole bundle or sheet contracts as a syncytium (i.e., a multinucleate mass of cytoplasm that is not separated into cells).
  • Multiunit smooth muscle tissues innervate individual cells; as such, they allow for fine control and gradual responses, much like motor unit recruitment in skeletal muscl

Cette définition contient du texte provenant d'une édition publique de Gray's Anatomy (20eme édition Américaine de "Gray's Anatomy of the Human Body" publiée en 1918 - http://www.bartleby.com/107/).

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