Maximum potassium ions secretion is seen in which of the following secretion?
Saliva
Gastric secretions
Jejunal secretions
Colonic secretions
Saliva contains large quantity of potassium and bicarbonate ions. The concentration of potassium ion is about 30 mEq/L, seven times as great as in plasma. The concentration of potassium is gastric secretions is relatively low. Colon secretes only a small amount of potassium. Ref: Guyton, 11th Ed Page 794