<prompt> Oaubain acts by inhibitingAdenyl cyclaseCa chanellsHK ATPaseNaKATPase  <response>: Ouabain is a cardiac glycoside and in lower doses, can be used medically to treat hypotension and some arrhythmias. It acts by inhibiting the NaK-ATPase, also known as the sodium-potassium ion pump Refer kDT 6e p496 