BIOL 221 Lecture Notes - Lecture 7: Lung Volumes, Pulmonology, Thoracic Cavity
3 Mar 2020
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Document Summary
Reduces total lung capacity, vital capacity & irv or erv. Pulmonary diseases are classified as restrictive if they result in a decrease in lung volume. Total lung capacity, vital capacity and irv or erv are reduced. Often the ratio of forced expiratory volume in one minute (fev1) to vital capacity (vc) remains nearly normal because both fev1 and vc decline. Pulmonary fibrosis, tuberculosis, pneumonia, pulmonary edema, lung cancer. Changes to pleurae, chest wall or respiratory musculature or nerves that reduce compliance. Restrictive lung diseases result from changes to lung tissue or changes that restrict the volume changes of the thoracic cavity. Changes to lung tissue include pulmonary fibrosis, tuberculosis, pneumonia, pulmonary edema, lung cancer. Changes that affect the ability to change the size of the thoracic cavity include changes to the pleurae, chest wall or respiratory musculature or nerves that reduce compliance.
