Digitalis is a cardiotonic steroid that does not act like a steroid. Instead, its function is to inhibit:
A) the Na+-K+ pump.
B) fatty acid intake.
C) calcium channels.
D) potassium and sodium pores.
E) dropsy channel.

Question

Quizplus · Accepted Answer

Digitalis inhibits the activity of the Na+-K+ pump, which leads to an increase in intracellular Na+ and a decrease in intracellular K+. This change in ion concentration affects the action potential and ultimately results in increased cardiac contractility. Digitalis does not actually act like a steroid, despite its classification as a cardiotonic steroid.

Digitalis Is a Cardiotonic Steroid That Does Not Act Like