508PharmacologyMedium
Which of the following statements concerning potassium channel openers is true?
AThese agents decrease transmembrane calcium current associated in a smooth muscle with long-lasting relaxation
BBeneficial effects of these agents are related primarily to their hemodynamic effects – decreased heart rate, blood
CThese agents increase the permeability of K channels, probably ATP-dependent K channels, that results in stabilizing the membrane potential of excitable cells near the resting potential
DThese agents has a moderate reflex and vascular dilative action caused by the stimulation of sensitive nerve endings
Correct answer
C. These agents increase the permeability of K channels, probably ATP-dependent K channels, that results in stabilizing the membrane potential of excitable cells near the resting potential
Explanation
The correct answer is These agents increase the permeability of K channels, probably ATP-dependent K channels, that results in stabilizing the membrane potential of excitable cells near the resting potential.