The dependence of airway smooth muscle on extracellular Ca2+ for contraction is influenced by the presence of cartilage Journal Articles uri icon

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  • Isolated guinea-pig and rabbit airway smooth muscle preparations lacking cartilage are less able to contract, in response to methacholine, histamine and K+, in the absence of extracellular Ca2+ than cartilage-containing preparations removed from the same animal. Cartilage apparently provides utilizable Ca2+ for contraction of airway smooth muscle. The presence of cartilage, therefore, affects the apparent dependence of the isolated smooth muscle on extracellular Ca2+ for contraction.


  • Raeburn, David
  • Rodger, Ian
  • Hay, Douglas WP
  • Fedan, Jeffrey S

publication date

  • April 1986