BN507 - MODULE 17 - RESPIRATORY SYSTEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS

BN507 - MODULE 17 - RESPIRATORY SYSTEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS What are the structures of the respiratory system? nasal cavity, pharynx, larynx, trachea, primary bronchi, lungs What are the three parts of the Pharynx nasopharynx, oropharynx, laryngopharynx What is the anatomy of the lungs? Respiratory bronchiole, alveolar duct, alveoli What is the function of the conducting zone ? conducts air to respiratory zone, moistens, warms, and filters/cleanses air What is the function of the respiratory zone? Site of gas exchange What are the structures of the conducting zone? nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles What are the structures of the respiratory zone? respiratory bronchioles, alveolar ducts, alveolar sacs, alveoli What is the relationship between volume and pressure? When volume increases, pressure decreases When volume decreases, pressure increases How is volume and pressure related to pulmonary ventilation? During pulmonary ventilation air (gases) moves between the atmosphere and the lungs. This movement occurs due to changes in the volume of the lungs which either decrease or increase lung/intrapulmonary pressure. What are the mechanisms for inspiration? 1. muscles of ventilation contract 2. Thoracic cavity expands 3. lungs stretch 4.Lung Volume increases 5. lung pressure decreases What are the mechanisms for expiration? 1. Muscles of ventilation relax 2. thoracic cavity restricts 3. lungs recoil