Effect of respiration on venous return to the heart.
D000792:Angiography; D000818:Animals; D001775:Blood Circulation / Q000502:physiology*; D004285:Dogs; D006321:Heart / Q000502:physiology*; D006503:Hepatic Veins / Q000502:physiology*; D012039:Regional Blood Flow; D012119:Respiration / Q000502:physiology*; D014684:Venae Cavae / Q000502:physiology*