lectures on respiratory physiology mechanics of breathing i
TRANSCRIPT
![Page 1: Lectures on respiratory physiology Mechanics of Breathing I](https://reader036.vdocuments.mx/reader036/viewer/2022081507/551be8b0550346c3588b6197/html5/thumbnails/1.jpg)
Lectures on respiratory physiologyLectures on respiratory physiology
Mechanics of Breathing IMechanics of Breathing I
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Perfect Lung
Action of the diaphragm
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Perfect Lung
Action of the intercostal muscles
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Perfect Lung
Action of the abdominal muscles
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Perfect Lung
Action of the intercostal muscles
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Perfect Lung
Pressure-volume curve of the lung
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3000
2000
1000
FRC
0 -10 -20 -30
Intrapleural pressure (cmH2O)
Vo
lum
e a
bo
ve
FR
C (
ml)
COMPLIANCE = ΔV / ΔP
=1000/5
= 200 ml/cmH2OΔV
ΔP
Compliance of lung
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Perfect Lung
Capillary showing collagen (Col)
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Perfect Lung
Fibers of elastin
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Perfect Lung
Some effects of surface tension
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Perfect Lung
Comparison of air and saline inflation
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Perfect Lung
Measurement of surface tension and its behavior
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Perfect Lung
Comparison of air and saline inflation
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Type II alveolar epithelial cell
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Type II cell showing lamellar inclusion bodies (LIB)
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Lung with absence of surfactant
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Regional differences of ventilation at FRC
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Regional differences of ventilation at RV
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Alveoli are larger at the apex (upper panel) than base (lower)
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Airway closure at the lung base
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Pressure changes with bilateral pneumothorax
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Pneumothorax of right lung
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Fibrosis of right lung
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Relaxation pressure-volume curves
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Perfect Lung
Pressure-volume curve of the lung
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Relaxation pressure-volume curves