WGU pathophysiology D236 Exam 2022 Questions and Answers

#Aortic stenosis/regurgitation #Mitral stenosis/regurgitation - *Mitral valve stenosis* occurs when the mitral valve in the heart narrows, restricting blood flow into the main pumping chamber. The mitral valve may also leak, causing *blood to flow back through the valve each time the left ventricle contracts*. This condition is called mitral valve regurgitation. *Backflow of blood* is caused by failure of the heart's mitral valve to close tightly. *Mitral valve regurgitation* is a condition in which the heart's mitral valve does not close tightly, which allows *blood to flow backward in the heart*. Acid Base Balance - lung and kidney compensation - The kidneys have two main ways to maintain acid-base balance - their cells reabsorb bicarbonate HCO3− from the urine back to the blood and they secrete hydrogen H+ ions into the uri