Functional differences within the artery wall.
D000818:Animals; D001808:Blood Vessels / Q000187:drug effects / Q000294:innervation / Q000502:physiology*; D002395:Catecholamines / Q000494:pharmacology / Q000502:physiology; D006801:Humans; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology; D014662:Vasoconstrictor Agents / Q000097:blood
D002395:Catecholamines; D014662:Vasoconstrictor Agents