BSN Fundamentals of Nursing Exam 3 Questions with Correct Answers.

Lower airway functions Correct Answer conduction of air Mucociliary clearance Production of pulmonary surfactant Cilia Correct Answer trap and propel mucus Mucus can be produced better when thinned with Correct Answer water Alveoli Correct Answer allow for diffusion of gases Surfactant Correct Answer maintains surface tension of alveoli to allow for diffusion of gases (keeps them open) Ventilation Correct Answer movement of air in and out of lungs Respiration Correct Answer exchange of oxygen and carbon dioxide Diffusion (O2) Correct Answer movement of O2 and CO2 between alveoli and capillaries Perfusion Correct Answer capillary blood passes through body tissues What normally stimulates body to breath Correct Answer high levels of CO2 Patients with chronic high CO2 levels breath because of a Correct Answer hypoxic drive Applying supplemental O2 to patients with chronic high CO2 levels can result in Correct Answer their body "forgetting to breath" Loss of hypoxic drive Hypoxia Correct Answer inadequate tissue oxygenation Hypoxia earliest s/s and other s/s Correct Answer confusion Dyspnea, elevated BP, increased pulse, cyanosis Hypoxia causes Correct Answer anemia COPD Pnuemonia Hypoventilation Correct Answer decreased rate or depth of air movement into the lungs Inadequate ventilation to meet the body's demands