Myogenic basis of vascular tone.
D000818:Animals; D001011:Aorta / Q000187:drug effects; D001808:Blood Vessels / Q000187:drug effects*; D002118:Calcium / Q000037:antagonists & inhibitors; D003864:Depression, Chemical; D006168:Guinea Pigs; D008564:Membrane Potentials / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects*; D009129:Muscle Tonus / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology*; D011169:Portal Vein / Q000187:drug effects; D013268:Stimulation, Chemical; D014700:Verapamil / Q000494:pharmacology*
D014700:Verapamil; D002118:Calcium; D009638:Norepinephrine