Lectures on respiratory physiology Mechanics of Breathing I.

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Presentation transcript:

Lectures on respiratory physiology Mechanics of Breathing I

Perfect Lung Action of the diaphragm

Perfect Lung Action of the intercostal muscles

Perfect Lung Action of the abdominal muscles

Perfect Lung Action of the intercostal muscles

Perfect Lung Pressure-volume curve of the lung

FRC Intrapleural pressure (cmH 2 O) Volume above FRC (ml) COMPLIANCE= ΔV / ΔP =1000/5 = 200 ml/cmH 2 O ΔVΔV ΔPΔP Compliance of lung

Perfect Lung Capillary showing collagen (Col)

Perfect Lung Fibers of elastin

Perfect Lung Some effects of surface tension

Perfect Lung Comparison of air and saline inflation

Perfect Lung Measurement of surface tension and its behavior

Perfect Lung Comparison of air and saline inflation

Type II alveolar epithelial cell

Type II cell showing lamellar inclusion bodies (LIB)

Lung with absence of surfactant

Regional differences of ventilation at FRC

Regional differences of ventilation at RV

Alveoli are larger at the apex (upper panel) than base (lower)

Airway closure at the lung base

Pressure changes with bilateral pneumothorax

Pneumothorax of right lung

Fibrosis of right lung

Relaxation pressure-volume curves

Perfect Lung Pressure-volume curve of the lung

Relaxation pressure-volume curves