Physiology 1021 Lecture Notes - Lecture 17: Respiratory Tract, Transpulmonary Pressure, Macrophage

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: John Ciriello

Document Summary

Respiratory system i: provides o2 to the blood, removes co2 from the blood, regulates blood ph, speech (moving air in and out, microbial defense. 6: traps and dissolves small blood clots (to allow for oxygen to go to the brain) Visceral pleura: in contact with lung tissue (visceral = organ or guts) Parietal pleura: in contact with chest wall (second layer) Intrapleural space: between the visceral and parietal >1mm. Pleural fluid: fills with fluid which balances the lung and the ribs. Microbial defence (ciliated cells sweep mucus out) Mucus grabs the unwanted particles and you either cough or swallow the mucus out. For gas exchange where you have oxygen and carbon dioxide. Macrophage is in charge of the micro-bacterial defense (it goes around and picks up bad things like automated vacuum cleaner) Bgb blood gas barrier is the border between the air and the capillary.