Force-velocity characteristics of esophageal muscle: effect of acetylcholine and norepinephrine.
D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D002118:Calcium / Q000494:pharmacology; D004947:Esophagus / Q000187:drug effects*; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology*; D009893:Opossums; D013268:Stimulation, Chemical
D000109:Acetylcholine; D002118:Calcium; D009638:Norepinephrine