Question 10 At an oxygen partial pressure of 30mm Hg, approximately what percent

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Question 10 At an oxygen partial pressure of 30mm Hg, approximately what percent of the myoglobin molecules would be bound to a single 02 molecule? Question 11 When plasma travels through a systemic capillary, most the of the Co2 entering the plasma is converted to carbonic anhydrase. dissolves in the plasma. binds to hempglobin in the red blood cells. is converted to bicarbonate ions Question 12 Fill in the blanks with the correct words. During inspiration, intra-alveloar pressure is OThe tidal volume is The intra-alveolar pressure when the diaphragm contracts is atmospheric pressure. A. less than B. equal to C.greater than the amount of fresh air that reaches the alveoli plus the dead space volume the intra-alveolar pressure when the diaphragm relaxes. The partial prsure of carbon diod inthe blood leaving the lungs via thepumonary vein ia At normal partial pressures in the capillaries, the percent of carbon dioxide in the blood that is bound to hemoglobin is The partial pressure of carbon dioxide in the blood leaving the lungs via the pulmonary vein is the partial pressure of carbon dioxide in the alveolar air the percent of oxygen in the blood that is bound to hemoglobin. Question 13 Which of the following sensory systems can produce a change in respiratory rhythm in response to an increase in the partial pressure of carbon dioxide in plasma (either directly or indirectly) (select one or more)? Chemoreceptors in the aortic arch Chemoreceptors in the carotid body Stretch receptors in the carotid sinus Stretch receptors in bronchi and bronchioles Chemoreceptors in the ventral respiratory group

Explanation / Answer

10) 2.8

11) is convert to cabonic anhydrase

12) a. equal to

     b. less than

     c. greate than

     d. less than

     e. less than

14) a. decrease

      b. increase

      c. decrease

      d. no effect

      e. increase

      f. have little

16) a. increase

     b. decrease

     c. increase

     d. increase

     e. decrease

     f. change very little

17) mechanics of respiration, Respiratory volume, Alveolar ventilation

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