MSF Exam 3 Practice Test Questions And Answers Verified 100% Correct

MSF Exam 3 Practice Test Questions And Answers Verified 100% Correct B. A decrease in lung compliance An individual with pulmonary fibrosis will demonstrate: A. An increase in lung compliance B. A decrease in lung compliance C. No change in lung compliance D. An increase in chest wall compliance E. A decrease in chest wall compliance False Decreased FEV1 but increased or normal FEV1/FVC T or F Common pulmonary function abnormalities in individuals with moderate restrictive lung disease include decreased FEV1 and FEV1/FVC B. Functional residual capacity Which of the following cannot be measured using a simple spirometer? A. Tidal volume B. Functional residual capacity C. Vital capacity D. Total (minute) ventilation E. Respiratory frequency E. 75% decrease If alveolar surface area is decreased by 50% and pulmonary edema leads to a doubling of diffusion distance, how does diffusion of O2 compare with normal? V = (A x D x (P1-P2)) / T A. 25% increase B. 50% increase C. 25% decrease D. 50% decrease E. 75% decrease A. The partial pressures of CO in alveolar gas and end-capillary blood will be virtually the same Because at the end of the capillary, CO never makes it all the way up to the alveolar gas pO2 pressure. N2O makes it up there in the first 1/10 of the capillary A subject inhales several breaths of a gas mixture containing low concentrations of CO and N2O. Which of the following statements is FALSE? A. The partial pressures of CO in alveolar gas and end-capillary blood will be virtually the same B. The partial pressures of N2O in alveolar gas and end-capillary blood will be virtually the same C. CO is transferred into the blood along the whole length of the capillary D. Almost all of the N2O will be taken up in the early part of the capillary E. The uptake of CO can be used to measure the diffusing capacity of the lung False Diffusion-limited T or F Increased distance btw the alveolus and the vasculature can result in perfusion limitation False Goes from 0.75 seconds normally to 0.25 seconds T or F During intense exercise, the transit time of blood in the pulmonary capillaries does not change from rest True T or F There is one iron atom in one heme group C. Strenuous exercise Bc body temp increased during exercise In the Hgb-O2 dissociation curve, a right shift would be caused by: A. Increased pH B. Decreased 2,3-BPG C. Strenuous exercise D. Fetal hemoglobin (HgF) E. CO poisoning True T or F One reason that CO gas is so dangerous is that it attaches to Hgb more readily than does O2 D. HCO3 within RBCs The predominant transport mechanism of CO2 in blood is by: A. Dissolved CO2 B. Carbamino protein complexes C. Hgb binding D. HCO3 within RBCs E. Deoxyhemoglobin A. It allows CO2, in the form of bicarbonate ions, to enter the blood plasma How is the chloride shift related to the transport of CO2 in the blood? A. It allows CO2, in the form of bicarbonate ions, to enter the blood plasma B. It creates carbaminohemoglobin within the RBCs C. It allows the conversion of CO2 into carbonic acid within RBCs D. It prevents formation of bicarbonate ions in the blood True T or F Acute CO poisoning results in reduced oxygen concentration of both arterial and mixed venous blood False No breathing will occur T or F Destruction of the respiratory area of the medulla would be expected to cause rapid breathing (hyperpnea) False T or F Changes in PO2 are recognized by central chemoreceptors True T or F The following set of values describes a patient with uncompensated respiratory acidosis pH 7.28, pCO2 50, HCO3 24 False It decreases as pulmonary blood flow increases T or F