Question

38. As exercise intensity increases at sea level, a group of metabolically active tissues will receive additional oxygen by accomplishing which of the following? a) vasodilation of the capillaries leading into the tissue b) increased heart rate and respiration rate c) breathing pure oxygen d) two of the above e) all of the above 39. Decreased O2 pressure in the alveoli a) would promote local dilation of bronchioles b) would promote local constriction of bronchioles c) would promote vasoconstriction of the pulmonary vessels d) two of the above e) none of the above 40. Your tidal volume is 450 ml, your inspiratory reserve volume is 3000 ml, your anatomical dead space is 150 ml and your respiratory rate is 10 breaths/min. What is your alveolar ventilation rate (AVR)? a) 4500 ml/min b) 10 breaths/min c) 3450ml/min d) 30ml/min e) 3000ml/min

Answer 1

Q 38) p exercise int Texeck we i - То, симало. To comprise increased On demand as Capilaries leading to tissue vasodilated to increase blood. How to to concentation Bincreased heart rate to increase circulation (jindleafed respiratory rate → to increase Oygenation I l of blooel'. O breathing puse O2 after intense exercise is helpful for athletes to but is otherwise stangaro dangesous in normal people A since extercise intensity is increased so pure o, would hello hence option (d, all of the above is right answer.

as 039) a bressure in alveoli " VOL pressuse in alveoli ventilation en cu) od perfusion la ratio is should remain constant for this these is local vaso contriction of pulmonary vessels ! Cu pesfusion ) in aleas of poor veuttation . and there is de local constriction of bronchioles also Ce ventilation, Yo Ration herce option (d, two of above is correct vesti litter to maintani l in areas of les persfusion ula for acca alveolar ventilation rate = 1 Tidut Votune anatoa - pace TY Tidal volunce - anatomical dead )x Respiratory rate - hace (TV) here to TV=3450ml 3 / 450-150) x10 dead space & = 150 ml RR = 10 breates per minute = 300x10=1 to optione, 3ooowl/min is the sigut auswes.
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