PNB 2265 QUIZ ON RESP. (EXAM 3) QUIZZES WITH VERIFIED SOLUTIONS .

PNB 2265 QUIZ ON RESP. (EXAM 3)
QUIZZES WITH VERIFIED SOLUTIONS .


The PO2 of systemic arterial blood is ________ mmHg and the PCO2 of systemic arterial
blood is _______ mmHg.


A. 100; 100
B. 40; 100
C. 100; 40
D. 46; 40
E. 40; 46 - Correct Answer -C. 100; 40


At the beginning of the pulmonary capillaries, the blood PO2 is _______ mmHg and the
PCO2 is _______ mmHg.


A. 46; 40
B. 100; 100
C. 40; 46
D. 100; 40
E. 40; 100 - Correct Answer -C. 40; 46


The PO2 of alveolar air is ________ mm Hg and the PCO2 of alveolar air is ________
mmHg.


A. 100; 100
B. 100; 40
C. 40; 46
D. 46; 40
E. 40; 100 - Correct Answer -B. 100; 40


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, At the beginning of systemic capillaries, the PO2 is _______ mmHg and the PCO2 is
_______ mmHg.




A. 46; 40
B. 40; 100
C. 100; 100
D. 100; 40
E. 40; 46 - Correct Answer -D. 100; 40


Which of the following is true for blood about to leave the systemic capillaries (i.e., in the
tissues)?


A. In red blood cells, some CO2 is bound to Hb.
B. In red blood cells, some CO2 is converted to carbonic acid (H2CO3)
C. Cl- ions are leaving the red blood cell.
D. All of the above are true
E. None of the above are true - Correct Answer -D. All of the above are true


How is most CO2 transported in the blood?


A. Dissolved in plasma
B. Bound to the heme portion of Hb
C. Bound to H2CO3 (carbonic acid)
D. As bicarbonate ion in red blood cells
E. As bicarbonate ions in the plasma - Correct Answer -E. As bicarbonate ions in the plasma


The partial pressure of O2 in the blood is due to the oxygen that is ________ .


A. Bound to Hb

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