Ap 2 dr mills twu ch27 - Study guides, Class notes & Summaries

136-142 mEq/L - sodium ions in blood - most common EXTRAcellular CATions 22-26 mEq/L - bicarbonate ions in arterial blood - 2nd most common EXTRAcellular CATion antidiuretic hormone - stimulates collecting duct water reabsorption. regulates H2O loss. vasopression. conserves body fluids. bicarbonate - weak base, buffer. helps control pH of blood by interacting w carbonic acid. bicarbonate antiport ion in RBCs - chloride ion (most prevalent ANion). interacts w/ bicarbonate to balance anions ...