The primary site of action of triameterene and spironolactone is the -
Ans. is 'b' i.e., Distal tubule o Potassium sparing diuretics (Sprionolactone and triameterene) act on late distal tubule and collecting duct.
Proximal tubule
Distal tubule
Ascending Loop of Henle
Descending Loop of Henle