In a normal individual, where is the partial pressure of oxygen the greatest? A.

Question

In a normal individual, where is the partial pressure of oxygen the greatest? A. in the alveoli B. in the arterial blood C. in the atmospheric air D. in the tissue E. in the venous blood 7. Resistance in the airways of the lungs decreases (select all that apply) A. In response to sympathetic nerve stimulation B. In response to paraympathetic nerve stimulation C. In response to a decrease in alveolar PCO2 D. As the diameter of the tubes decreases E. As the velocity of airflow increases Which of the following would be expected to decrease the rate of oxygen diffusion across the alveolar-capillary membrane of the lung (select all that apply) A. A decrease in PO_2, difference between the alveolus and the pulmonary capillary blood B. An increase in the surface are of the alveolar-capillary membrane C. An increase in the thickness of the alveolar-capillary membrane D. A decease in oxygen solubility in the alveolar membrane Which of the following best represents the systemic arterial blood of an individual with anemia? Low PO_2, low hemoglobin, low O_2 content B. Low PO_2, low hemoglobin, normal O_2 content C Low PO_2, normal hemoglobin, low O_2 content D Low PO_2, normal hemoglobin, normal O_2 content E. Normal PO_2, low hemoglobin, low O_2 content F. Normal PO_2, low hemoglobin, normal O_2 content G. Normal PO_2, normal hemoglobin, low O_2 content H. Normal PO_2, normal hemoglobin, normal O_2 content A decrease in blood pH will displace the hemoglobin dissociation curve to the: A. right and reduces oxygen carrying capacity B. right with no change in oxygen carrying capacity C. right with increases oxygen carrying capacity D. left and reduces oxygen carrying capacity E. left with no change in oxygen carrying capacity F. left with increases oxygen carrying capacity Normally, as the alveolar PO_2 is increased from 110 to 950 mm Hg, the amount of oxygen dissolved in plasma __________ and amount of associated with hemoglobin __________. A Plasma increases, Hb increases B. Plasma increases, Hb remains-constant C. Plasma increases, Hb decreases D. Plasma remains constant, Hb increases E. Plasma remains constant Hb remains - constant F. Plasma remains constant, Hb decreases

Explanation / Answer

6) I think option E is correct because in an individual the partial pressure of oxygen is greatest in the venous of the blood which is nothing but leaving the tissues.So option E is correct.

7) The resistance in the airways of lungs decrease the diameter of the tubes and increases the velocity of airflow and alveolar PCO2 decreases.So i think last three options are correct

9) Normal PO2,low haemoglobin,low O2 characterizes the systemic arterial blood of an individual with anemia.So i think option E is correct.

10) Decrease in the PH of the blood leads to shifting of curve to the right side and the O2 effinity will get decreased.

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