Cholinergic fibres in the sympathetic outflow to the heart in the dog and cat.
D000818:Animals; D001341:Autonomic Nervous System; D002415:Cats; D002799:Cholinergic Fibers; D004285:Dogs; D045991:Felis; D006321:Heart / Q000502:physiology*
HEART/physiology; NERVOUS SYSTEM, AUTONOMIC