Ca ions and potassium contracture in the retractor unguis muscle of the cockroach.
Potassium contracture consists of a phasic and a sustained component. Extracellular Ca ions are essential for both components. In the phasic component the Ca-induced Ca release mechanism is activated by the entry of the Ca ions.
Yamaguchi
T
T
Department of Biology, International Christian University, Tokyo, Japan.
Washio
H
H
Kato
Y
Y
D000818:Animals; D002118:Calcium / Q000378:metabolism / Q000494:pharmacology*; D003058:Cockroaches; D066298:In Vitro Techniques; D008345:Manganese / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000187:drug effects / Q000502:physiology*; D009543:Nifedipine / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology*
D008345:Manganese; D009543:Nifedipine; D011188:Potassium; D002118:Calcium