title: Atrial activation pathways and the P wave in the horse.
mesh_terms: D000200:Action Potentials; D000818:Animals; D004562:Electrocardiography / Q000662:veterinary; D006321:Heart / Q000502:physiology*; D006325:Heart Atria; D006329:Heart Conduction System / Q000502:physiology; D006736:Horses / Q000502:physiology*; D010496:Pericardium / Q000601:surgery