The Weeknd-Starboy (c x G After expiration and befo x y M Pull Homework 2 x Emot

Question

The Weeknd-Starboy (c x G After expiration and befo x y M Pull Homework 2 x Emotional Development x monary C ezto mheducation.com/hm.tpx References Multiple Choice Section: 13.02 20 points Which of the following occurs during expiration? O An increase in alveolar volume causes an increase in alveolar pressure. O A decrease in alveolar volume causes a decrease in alveolar pressure. O Alveolar pressure rises above atmospheric pressure. O An increase in alveolar volume causes a decrease in alveolar pressure. O Alveolar pressure falls below atmospheric pressure. References Multiple Choice Section: 13.02 6. 20 points Required information Required information 7:5

Explanation / Answer

ans.1) alveolar pressure is eaual to atmospheric presure

reason- at rest, the alveolar presure is same as atmospheric pressure and taken as 0mm Hg

ans.2) an increase in alveolar volume causes an increase in alveolar pressure

reason- as the lungs and intercostal space expands in inspiration, volume of lung increases causing large amount of air inside the lungs. this decreases the presure of intraalveolar space or lungs to -1mmHg

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