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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For HSN Card customers, you may call 888-724-6649. For HSN MasterCard customers, you may call: 866-702-9947. For those who choose to make online payments instead of mail and phone, here is a complete guide to help you get started. Locate the HSN Card portal through d.Comenity.Net/HSN. A screenshot of the page is found below to guide you.