ENS 332 Lecture Notes - Lecture 4: Lung Volumes, Pulmonary Circulation, Chronic Obstructive Pulmonary Disease
Document Summary
Negative pressure keeps lungs stuck to the chest wall n = number of moles of gas. Decrease in pressure = increase in volume. Normal: total lung capacity to residual volume (rv) is 3-6 seconds, fvc = forced vital capacity, fev1 = force expired volume in the first round. Global initiative for chronic obstructive lung disease (gold) Normal lungs: have healthy elastic components and very little resistance to expiratory flow, in spontaneous tidal volume loops, it is unlikely that the person will be flow limited even during heavy exercise. September 12, 2016: their flow-volume envelope allows the eelv to decrease during the elevated ventilatory demands of exercise. Obstructive disease: elastic components may be abnormal and airways are obstructed, the flow-volume loop is also abnormal. Classic symptom of morgagni"s so called turgid lungs. Obstructive problems with airways (i. e. cigarette smoking) Blood transported through invisible pores in septum, mixed with air and spirit, distributed to body.