title: [Possible mechanism of the alpha-adrenoceptor response in the guinea pig myocardium--increasing influx of extracellular calcium ions].
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002121:Calcium Channel Blockers; D005110:Extracellular Space / Q000378:metabolism; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007473:Ion Channels / Q000378:metabolism*; D008729:Methoxamine / Q000494:pharmacology; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D010646:Phentolamine / Q000494:pharmacology; D011942:Receptors, Adrenergic, alpha / Q000502:physiology*; D013268:Stimulation, Chemical; D014700:Verapamil / Q000494:pharmacology
chemical_list: D002121:Calcium Channel Blockers; D007473:Ion Channels; D011942:Receptors, Adrenergic, alpha; D014700:Verapamil; D008729:Methoxamine; D002118:Calcium; D010646:Phentolamine