title: Skeletal muscle: dependence of potassium contractures on extracellular calcium.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology*; D004558:Electric Stimulation; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000187:drug effects*; D011188:Potassium / Q000494:pharmacology*
chemical_list: D011188:Potassium; D002118:Calcium