10/17/21, 1:19 AM Print Questions 5. A person's cardiac output, or the amount of blood a person's heart pumps in a minute, can be calculated with the formula Q y = D, where Q is the number of milliliters of CO, exhaled in a minute and D is the difference between the CO, concentration (mL / L) in the blood pumped to the lungs and the CO, concentration in the blood returning from the lungs. Suppose that when Q = 222 mL / min and D = 37 mL / L, it is also known that D is decreasing at the rate of 2 units a minute but that Q remains unchanged. What is happening to the cardiac output? Give the formula in terms of Q and D that can be evaluated to find the rate of change of cardiac output. dy dD at dt The cardiac output is (1) because its rate of change is (2) (Simplify your answer. Type an integer or a fraction.) (1) O increasing, (2) O L. O L/ min O decreasing, O mL/L. O min. O mL/ (L . min). O L/ min