Podcast
Questions and Answers
What is the primary reason for oxygen diffusion from the alveoli to the blood?
What is the primary reason for oxygen diffusion from the alveoli to the blood?
- Higher pO2 in the blood compared to the alveoli
- Lower pO2 in the capillaries compared to the alveoli (correct)
- Lower pO2 in the alveoli compared to the oxygenated blood
- Thicker respiratory membrane in the alveoli
What is the primary function of the alveoli?
What is the primary function of the alveoli?
- To facilitate the exchange of gases between the lungs and the bloodstream (correct)
- To strengthen the lungs against external injuries
- To produce mucus to trap dust and bacteria
- To provide a pathway for air to enter the lungs
Which of the following statements about oxygenated blood is true?
Which of the following statements about oxygenated blood is true?
- It has a lower pO2 compared to the tissues
- It has the same pO2 as the alveoli
- It has a lower pO2 compared to the alveoli
- It has a higher pO2 compared to the deoxygenated blood (correct)
What is the direction of carbon dioxide diffusion in the alveoli?
What is the direction of carbon dioxide diffusion in the alveoli?
Which of the following is NOT a function of the spirometer?
Which of the following is NOT a function of the spirometer?
What is the term for the surface of gas exchange between the lungs and the bloodstream?
What is the term for the surface of gas exchange between the lungs and the bloodstream?
What is the primary site of gas exchange between the blood and the air?
What is the primary site of gas exchange between the blood and the air?
What is the pO2 of the oxygenated blood when it leaves the lungs?
What is the pO2 of the oxygenated blood when it leaves the lungs?
What is the primary location of the alveoli in the respiratory system?
What is the primary location of the alveoli in the respiratory system?
What is the direction of oxygen diffusion in the tissues?
What is the direction of oxygen diffusion in the tissues?
What is the process by which gases cross the alveolar membrane?
What is the process by which gases cross the alveolar membrane?
What is the characteristic of the alveolar membrane that facilitates gas exchange?
What is the characteristic of the alveolar membrane that facilitates gas exchange?
What is the main function of the trachea in the respiratory system?
What is the main function of the trachea in the respiratory system?
Which of the following structures is responsible for exchanging oxygen and carbon dioxide?
Which of the following structures is responsible for exchanging oxygen and carbon dioxide?
What is the primary purpose of the heart in the respiratory process?
What is the primary purpose of the heart in the respiratory process?
Which of the following blood vessels carries oxygen-rich blood from the lungs to the heart?
Which of the following blood vessels carries oxygen-rich blood from the lungs to the heart?
What is the byproduct of cellular respiration that is released into the bloodstream?
What is the byproduct of cellular respiration that is released into the bloodstream?
What is the purpose of the capillary network surrounding the alveoli?
What is the purpose of the capillary network surrounding the alveoli?
What is the primary function of the bronchioles in the respiratory system?
What is the primary function of the bronchioles in the respiratory system?
What is the characteristic of the trachea that prevents it from collapsing?
What is the characteristic of the trachea that prevents it from collapsing?
What is the site where air is prepared for gas exchange with the blood?
What is the site where air is prepared for gas exchange with the blood?
What is the role of the respiratory part of the respiratory system?
What is the role of the respiratory part of the respiratory system?
What is the structure that leads to the nasopharynx?
What is the structure that leads to the nasopharynx?
What is the direction of air flow through the bronchi?
What is the direction of air flow through the bronchi?
What is the main function of the nasal passage in the human respiratory system?
What is the main function of the nasal passage in the human respiratory system?
Which of the following organisms breathes through its moist cuticle?
Which of the following organisms breathes through its moist cuticle?
What is the role of the diaphragm in the human respiratory system?
What is the role of the diaphragm in the human respiratory system?
How do insects transport air throughout their body?
How do insects transport air throughout their body?
What is the pathway of carbon dioxide in the human respiratory system?
What is the pathway of carbon dioxide in the human respiratory system?
Which of the following organisms can respire through their moist skin?
Which of the following organisms can respire through their moist skin?
What is the primary function of the alveoli in the respiratory system?
What is the primary function of the alveoli in the respiratory system?
Which of the following occurs during external respiration?
Which of the following occurs during external respiration?
What is the purpose of the capillary network surrounding the alveoli?
What is the purpose of the capillary network surrounding the alveoli?
Which of the following is a characteristic of the lung tissue in a patient with a respiratory disease?
Which of the following is a characteristic of the lung tissue in a patient with a respiratory disease?
What happens to the diaphragm during inspiration?
What happens to the diaphragm during inspiration?
Which of the following is a function of the nasal cavity in the respiratory system?
Which of the following is a function of the nasal cavity in the respiratory system?
