Regarding the sympathetic nervous system regulation of bloodvessels
Select one:
a. Beta adrenergic receptors have a higher affinity fornorepinephrine compared to epinephrine
b. Beta adrenergic receptors are located on all arteriolesthroughout the circulation
c. Norepinephrine activation of alpha-adrenergic receptors onthe smooth muscle of arterioles causes a vasoconstrictor signal
d. Sympathetic nerves release equal amounts of norepinephrineand epinephrine
e. Simultaneous activation of both alpha and beta adrenergicreceptors will lead to a stronger vasoconstriction than if just 1receptor type was activated
