Increased Na+ flow through channels at the apical end of brush border cells leads to a(n) [ decrease ] of cellular osmotic potential. An increase in AC activity leads to a(n) [ increase ] of osmotic potential in these cells. Activity of an enzyme converting cAMP to AMP leads to a(n) [ decrease] of osmotic potential in these cells. Cholera leads to a(n) [increase ] of osmotic potential in these cells. Cystic fibrosis leads to a(n) [ decrease ] of osmotic potential in these cells.
increase", "decrease