Blood-vessels.
D000200:Action Potentials; D000818:Animals; D001158:Arteries / Q000293:injuries / Q000294:innervation; D002118:Calcium / Q000378:metabolism; D007473:Ion Channels / Q000502:physiology; D009119:Muscle Contraction; D009131:Muscle, Smooth, Vascular / Q000033:anatomy & histology / Q000187:drug effects / Q000502:physiology*; D011941:Receptors, Adrenergic / Q000502:physiology; D012756:Sheep; D014662:Vasoconstrictor Agents / Q000494:pharmacology
D007473:Ion Channels; D011941:Receptors, Adrenergic; D014662:Vasoconstrictor Agents; D002118:Calcium