NURS 330 Respiratory Questions with Complete Solutions.

Components of Respiratory Function Correct Answer--respiration requires gas exchange and consists of these components 1-ventilation 2-diffusion 3-perfusion -normal breath we take in =500mL -Gas exchange= consists of Nitrogen 79%, O2 21% (Rm Air); CO2 =0.4%; water vapor, helium & argon. ventilation Correct Answer--movement of air from the atmosphere to the alveoli diffusion Correct Answer--exchange of oxygen and carbon dioxide at the alveolar-capillary membrane (higher to lower concentration, COPD) perfusion Correct Answer--blood flow. R ventricle pumps blood into lungs via pulmonary artery. perfusion is influenced by the alveolar pressure. Norm resp 12-20; O2 sat>90%, Am heart and hospital sys >94%. <90=hypoxia how many lobes do the R and L lung have Correct Answer--R lung= 3 lobes -L lung= 2 lobes