15) Carbon dioxide i A. carbaminohemoglobin. B. carbonic acid. s transported by

Question

15) Carbon dioxide i A. carbaminohemoglobin. B. carbonic acid. s transported by all the following means except D. bicarbonate ions. 16) In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of its oxygen? A. 5% to 10% B. 10% to 15% C. 20% to 25% D. 30% to 40% 17) Normally the systemic arterial blood has a Po2 of mm Hg, and a pH of A. 40; 95;7.4 B. 95; 40;7.4 C. 7.4; 40;95 D. 95; 7.4;40 mm Hg, a Pco of 18) In a healthy person, which of the following will have the greatest influence on resistance to pulmonary airflow? A. atmospheric pressure B. respiratory rate C. bronchiole diameter D. quantity of surfactant 19) Mucus plays an important role in cleansing inhaled air. It is produced by of the respiratory tract. A. squamous alveolar cells B. great alveolar cells C. the pleurae D. goblet cells 20) Which of the following enzymes in an RBC breaks HyCO, down to water and carbon dioxide? A. hemoglobin B. carboxyhemoglobin C. carbonic anhydrase D. bisphosphoglycerate 21) Which of the following has no effect on oxyhemoglobin disseciation? A. pCO2 B. temperature C. erythrocyte count D. low pH

Explanation / Answer

Q15. Carbon dioxide is transported by all the following means except? Answer. C) Carbonate

As we know blood flows through the tissues, carbon dioxide diffuses into red blood cells, where it is converted into bicarbonate.

Q16. In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of its oxygen?

Answer. C) 20% to 25%

Q17. Normally the systemic arterial blood has a PO2 of ____mmHg, a Pco2 of _____ mm Hg and a pH of _____

Answer. B) 95; 40; 7.4

Q18. In a healthy person which of the following will have the greatest influence on resistance to pulmonary air flow

Answer. C) Bronchiole diameter

Q19. Mucus plays an important role in cleansing inhaled air. it is produced by ....... of the respiratory tract

Answer. D) Goblet cells

Q20. The enzymes in an RBC that breaks H2CO3 down to water and carbon dioxide is

Answer. C) carbonic anhydrase

Q21.Which of the following has no effect on oxyhemoglobin dissociation?

Answer. C) erythrocyte count

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