Spontaneous potential at sympathetic nerve endings in smooth muscle.
D009130:Muscle, Smooth; D009132:Muscles / Q000502:physiology*; D009411:Nerve Endings; D009474:Neurons / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology*
MUSCLES/physiology; NEURONS/physiology; SYMPATHETIC NERVOUS SYSTEM/physiology