Podcast
Questions and Answers
What is the main process by which gas exchange occurs in the respiratory system?
What is the main process by which gas exchange occurs in the respiratory system?
- Facilitated diffusion
- Osmosis
- Active transport
- Simple diffusion (correct)
According to Fick’s law of diffusion, what factor affects the volume of gas diffusing across a membrane?
According to Fick’s law of diffusion, what factor affects the volume of gas diffusing across a membrane?
- Thickness of the membrane (correct)
- Blood flow rate
- Temperature of the membrane
- Color of the membrane
Which of the following is NOT a factor affecting gas diffusion through the respiratory membrane?
Which of the following is NOT a factor affecting gas diffusion through the respiratory membrane?
- Surface area of the membrane
- Pressure gradient across the membrane
- Size of the alveoli (correct)
- Thickness of the membrane
How does an increase in membrane thickness affect the rate of diffusion through the respiratory membrane?
How does an increase in membrane thickness affect the rate of diffusion through the respiratory membrane?
What does Fick's law state about the relationship between gas diffusion and membrane surface area?
What does Fick's law state about the relationship between gas diffusion and membrane surface area?
In Fick’s law of diffusion, what is the role of the pressure gradient across the respiratory membrane?
In Fick’s law of diffusion, what is the role of the pressure gradient across the respiratory membrane?
What happens in pulmonary oedema?
What happens in pulmonary oedema?
How does pulmonary fibrosis affect the respiratory membrane?
How does pulmonary fibrosis affect the respiratory membrane?
Which gas diffuses more easily through the respiratory membrane?
Which gas diffuses more easily through the respiratory membrane?
What does a pulmonectomy involve?
What does a pulmonectomy involve?
What factor affects the rate of diffusion across the respiratory membrane?
What factor affects the rate of diffusion across the respiratory membrane?
How is the diffusion coefficient of a gas related to its molecular weight?
How is the diffusion coefficient of a gas related to its molecular weight?
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