The lungs and kidneys are the major organs involved in regulating blood pH. 1  The lungs flush acid out of the body by exhaling CO 2. 2  The kidneys excrete acids in the urine, and they regulate the concentration of bicarbonate (HCO 3 - , a base) in blood.
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Below is a list of toll free 800 numbers for MasterCard customers. Thank you for calling the master card assistance center. if you are a MasterCard, card holder press one, To report a lost or stolen card or other emergency press one, if you need specific account information like your account balance, a payment or billing question press two.