BIOL 3320 - Respiratory System Exam | Questions and Answers

BIOL 3320 - Respiratory System Exam | Questions and Answers Place the following structures in the correct order through which a molecule of air would pass as it moves from the nose to the alveoli. 1. Nasopharynx 2. Oropharynx 3.Laryngopharynx 4. Trachea 5. Carina 6. Main Bronchi 7. Lobar Bronchi 8. Segmental Bronchi 9. Bronchiole 10. Terminal Bronchiole 11. Respiratory Bronchiole Which of the following are bicarbonate ions exchanged for when they diffuse from plasma back into red blood cells? Chloride ions At the respiratory membrane, the partial pressure of carbon dioxide in the plasma is _____ than in the _____ of the lungs. higher, alveoli Place the labels in the correct sequence, indicating the order this reversible reaction will occur within the PULMONARY CAPILLARIES. You should start with and end with either carbon dioxide or bicarbonate. HCO3- + H+ --> H2CO3 --> H2O + CO2 The___ is the amount of air remaining in the lungs after a forced expiration. residual volume The volume of air exchanged during normal breathing is called the_____. tidal volume After a normal inspiration, the amount of air that can be inspired forcefully is called the ____ inspiratory reserve volume If you subtract the residual volume from the total lung capacity, you get the ____ vital capacity The vital capacity minus the _____ equals the inspiratory capacity expiratory reserve volume The effects of obstructive diseases such as asthma or emphysema may be determined by measuring the ____ forced expiratory volume ______ law states that the amount of gas dissolving in water is determined by its partial pressure. Henry's Thus, the greater the Po₂ in the alveolar air, the more _____ the blood picks up Oxygen Since blood arriving at the alveolus has a ____ Pco2 than air, it releases CO2 into the air. Higher Each gas in a mixture behaves _____ Independently The diffusion of one gas does not ____ the diffusion of another Influence Which of the following structures are part of the conducting zone of the respiratory system? Check all that apply. pharynx, larynx, trachea, main bronchi Because gas exchange does not occur within the conducting zone of the respiratory system, it is also referred to as what? anatomical dead space When the production of surfactant by _____ alveolar cells is insufficient, premature infants typically have trouble keeping their alveoli inflated type-II Classified as simple squamous epithelial cells, the majority of the alveolar surface is covered by _____ alveolar cells. type-I Microscopic examination of lung tissue from a patient who died from bacterial pneumonia would reveal large numbers of ______ Macrophages The layer of the respiratory membrane that is furthest away from the alveolar air spaces is the membrane of the _______ capillary endothelial cell Place the respiratory structures into the order that air would pass through them during a normal inspiration. Outside of body 1. Trachea 2. Primary bronchus 3. Secondary bronchus 4. Tertiary bronchus 5. Bronchiole 6. Terminal bronchiole 7. Respiratory bronchiole 8. Alveolar duct 9. Alveolar sac 10. Alveolus Inside of Body What determines the direction of gas movement? The partial pressure differences Which of the following statements about partial pressures of gases in the lungs is true? Po2 in the lungs > Po2 in the blood; Pco2 in the lungs < Pco2 in the blood Which of the following statements about partial pressures of gases in the tissues is true? Po2 in blood > Po2 in tissues; Pco2 in blood < Pco2 in tissues Oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart. False Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart. True Place the following airways in order of airflow as air enters the lungs. 1. Primary bronchus 2. Secondary bronchus 3. Tertiary bronchus 4. Terminal bronchiole 5. Respiratory bronchiole 6. Alveolar duct The majority of CO₂ in the blood is carried as ____ bicarbonate ion