RespImages2 - Airway Resistance • Normally insignificant...

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Unformatted text preview: Airway Resistance • Normally insignificant • Mucus accumulation causes airway resistance to: • Epinephrine causes: – Bronchiolar smooth muscle to: – Bronchiolar resistance to: • Histamine causes bronchiolar smooth muscle to: – Bronchiolar smooth muscle to: – Bronchiolar resistance to: Surface Tension Surface Tension • “Surface tension” tends to promote alveolar… • Why? • Good thing or bad thing? • Remember surfactant? An autoimmune disease that caused destruction of type 2 alveolar cells would cause surfactant levels to… This would cause alveolar surface tension to ___________; and the amount of energy used to inflate the lungs would ____________. Surface Tension Compliance • Lung Compliance • Thoracic Compliance Atmospheric Composition • CO 2 0.04% • N 2 78.6% • O 2 20.9% • H 2 O 0.46% Alveolar Gas Composition • CO 2 5.2% • N 2 74.9% • O 2 13.7% • H 2 O 6.2% Dalton’s Law of Partial Pressures Henry’s Law and Solubilities Henry’s Law and Solubilities Henry’s Law and Solubilities Henry’s Law and Solubilities 3 Factors Affecting External Respiration • Partial Pressure Gradients and Solubilities • Ventilation-Perfusion Coupling • Thickness of the Respiratory Membrane Ventilation-Perfusion Coupling...
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This note was uploaded on 11/10/2011 for the course LS 101 taught by Professor Abdul during the Spring '11 term at Montgomery College.

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RespImages2 - Airway Resistance • Normally insignificant...

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