The vessel wall and its control.
D001158:Arteries / Q000502:physiology*; D006801:Humans; D009131:Muscle, Smooth, Vascular / Q000502:physiology*; D009569:Nitric Oxide; D014665:Vasodilator Agents / Q000502:physiology*
D014665:Vasodilator Agents; D009569:Nitric Oxide