When considering the effects of norepinephrine, which of the

Last updated: 8/8/2022

When considering the effects of norepinephrine, which of the following would account for the observed change in heart rate? (Please choose all answers that apply.) A reduction in the duration of the pacemaker potential Increased activation of beta 2 receptors Threshold is reached sooner Ca2+ channels are open longer An increase in K+ influx An increase in CAMP A reduction in Ca2+ permeability A decrease in phospholamban activity A decrease in CAMP A decrease in K+ efflux