QUESTION 2 At lower than normal body pH, the affinity of hemoglobin for oxygen: Increases, because hemoglobin also binds to H+ Decreases, because hemoglobin also binds to H+ Increases, because hemoglobin also binds to CO2 Decreases, because hemoglobin also binds to CO2

QUESTION 8 Given the following, what is the partial pressure of gas B (mm Hg) in this mixture of gases? Mixture of gases includes gases A, B, and C. The total pressure exerted by the gaseous mixture is 300 mm Hg. Gas A = 50% of the total gas, Gas B = 10% of the total gas, and Gas C = 40% of the total gas. 50 300 30 O 10

Question 16 Which of the following is essential for the proper functioning of the lungs? O optimal body temperature O diffusion of carbon dioxide from cells O essential nutrients from our diet sufficient oxygen O adequate atmospheric pressure

QUESTION 5 When researchers are looking for evidence of cross-current exchange in non-avian diapsids, what is one thing that they look for? unidirectional flow through the lungs the presence of ribs the presence of a diaphragm the presence of choanae

Question 46 What is hemoglobin saturation at altitude (assume high altitude) with a PO2 of 50 mmHg? 55 83.5 97.5 100 DO e

Question 1 Which of the following reactions is more likely to occur in systemic capillaries than in pulmonary capillaries? OA. Hb + O₂ -> HbO2 O E. HbCO, -- Hb+ CO, O C. HbO₂ -> Hb + O₂ O D.HbCO2 → Hb + HCO3 E. HbH -> Hb + H* 4

Question 44 Concerning pulmonary circulation, which of these is NOT true? The pulmonary veins carry oxygenated blood Pulmonary trunk bifurcates into left and right arteries O It carries much less blood in the fetus than in the adult OIt operates at a lower pressure than systemic circulation O It receives blood from the left ventricle through the aorta

Question 49 With a RIGHT SHIFT of the oxygen-Hb saturation curve, P50 O INCREASES O DECREASES O DOES NOT CHANGE

Question 17 The primary signal detected by the peripheral chemoreceptors is the O A. increase in P02, opening B. decrease in Po2, closing O C. increase in PO2, closing D. decrease in PCO2, opening OE. None of the above and of potassium channels that depolarize the Glomus cells.

Question 36  In COPD, hypoxemia may promote a compensatory increase in RBC production. What organ is responsible for detecting hypoxemia and releasing erythropoietin to stimulate RBC production? Question 36 options: Liver Red bone marrow Kidneys Peripheral chemoreceptors