sunny811
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Topics: 8
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anyone ???
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| Jackofknives
Ipwnpoker.com
Topics: 91
Posts: 741
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D, i.e. 2 L
End expiratory volume is FRC, at the point at which the expanding force of the chest wall and the collapsing force of the lung are equal and opposite.
PS. do i own or do i own more?
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| Ig F
Forum Elite
Topics: 3
Posts: 440
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tell me how did u interpret through this graph????kinda tricky for me....
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| Ig F
Forum Elite
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ok guys i got this one....
at the end of normal expiration the lung is at FRC and the intrapleural pressure is at -5 cm H2O...so iu we coincide the the volume which is present on the y axis to the pressure measurement which is present at the x axis then answer turns out to be 2.5 lt.
so the answer is E....i.e. 2.5 lt.
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| Jackofknives
Ipwnpoker.com
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dude in no way can you see what the intrapleural pressure is on that curve. according to your reasoning, a lung volume above 3.5 would give rise to a Positive pressure, which never occurs unless you v got a pneumothorax. I.e. your reasoning is shot down.
What the curve shows is COMPLIANCE. i.e. delta V/ delta P. To get a FRC, opposing forces are EQUAL and OPPOSITE. How does it look like on the curve? The horizontal distance from the vertical axis to the 2 respective curves should be equal. Which point is it? D!
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