Final Exam: BIOS 256 / BIOS256 (2024/ 2025 Update) Anatomy and Physiology IV Complete Guide _ Questions and Verified Answers_ 100% Correct_ A Grade - Chamberlain

Final Exam: BIOS 256 / BIOS256 (2024/ 2025 Update) Anatomy and Physiology IV Complete Guide _ Questions and Verified Answers_ 100% Correct_ A Grade - Chamberlain Buffer æ Any mechanism that resists changes in pH æ Convert strong acids or bases to weak ones QUESTION Physiological buffer Answer: System that controls output of acids, bases, or CO2 QUESTION Chemical buffer Answer: Substance that binds H+ and removes it from solution as its concentration begins to rise or releases H+ into solution as its concentration falls -amount of acid or base neutralized depends on the concentration of the buffers and the pH of the working environment QUESTION Some psychological buffers are? Answer: respiratory system, circulatory system, re- nal system QUESTION Some chemical buffers are? Answer: bicarbonate, protein, phosphate QUESTION When we breath we take in , mixes with , and forms , gets removed to retain ? Answer: When we breathe we take in carbon dioxide, mixes with water, and forms carbonic acid, hydrogen ion gets removed and retains bicarbonate QUESTION To maintain pH this needs to happen Answer: either removing bicarbonate or hydro- gen ions QUESTION Bicarbonate buffer system Answer: Solution of carbonic acid and bicarbonate ions -coordinates with the lung and kidneys to help control pH and CO2 To lower pH: kidneys excrete bicarbonate(HCO3-) To raise pH: kidneys excrete H+ and lungs excrete CO2 QUESTION Carbonic acid and bicarbonate ions participate in a reversible reaction