title: Mechanical activity and ionic currents in frog atrial trabeculae.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D016275:Atrial Function; D001639:Bicarbonates / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism*; D006325:Heart Atria / Q000378:metabolism; D066298:In Vitro Techniques; D008345:Manganese / Q000378:metabolism*; D008564:Membrane Potentials; D008722:Methods; D009119:Muscle Contraction; D011188:Potassium / Q000378:metabolism*; D011893:Rana esculenta; D012964:Sodium / Q000378:metabolism*
chemical_list: D001639:Bicarbonates; D008345:Manganese; D012964:Sodium; D011188:Potassium; D002118:Calcium