NUR 228 - Pulmonary Physiology Questions & 100% Correct Answers

What is dyspnea? ~~> difficulty breathing (SOB, labored breathing, "air hunger") What are some causes of dyspnea? ~~> asthma, COPD, interstitial lung disease, heart failure, pneumonia, psychiatric problems, choking, airway obstruction What is clubbing? ~~> tips of fingernails enlarge, the nail curves around What causes clubbing? ~~> low oxygen levels in the body Is clubbing chronic or acute? ~~> results from chronic low oxygen levels, over a number of years Does a large alveolus have low or high collapsing pressure? 2 | P a g e | © copyright 2024/2025 | Grade A+ Master01 | September, 2024/2025 | Latest update ~~> low Does a small alveolus have low or high collapsing pressure? ~~> high Does a small alveolus with surfactant have low or high collapsing pressure? ~~> low T/F Inspiration is a passive process ~~> false; active (muscles contract) T/F expiration is a passive process ~~> true; muscles relax What happens to the diaphragm during inhalation and exhalation? ~~> inhalation: diaphragm curves down exhalation: diaphragm is more flat and smaller What is elastic recoil? 3 | P a g e | © copyright 2024/2025 | Grade A+ Master01 | September, 2024/2025 | Latest update ~~> ability for the lung to return to unstretched shape after expanding/stretching What are some age related pulmonary changes? ~~> - inc stiffness of chest wall - dec muscle mass - reduced mucociliary clearance -decreased elastic fibers -increased cross linked collagen -enlarged alveolar ducts and alveoli -decreased lung size T/F: sputum is norma