Podcast
Questions and Answers
What is the primary factor that affects breathing rate by increasing H+ and decreasing pH?
What is the primary factor that affects breathing rate by increasing H+ and decreasing pH?
- Elevated CO2 concentration in the blood (correct)
- High O2 levels in the blood
- Low CO2 levels in the blood
- Lactate in the muscles
Why does strenuous exercise increase breathing rate according to the text?
Why does strenuous exercise increase breathing rate according to the text?
- To increase the amount of O2 in the blood
- To promote muscle relaxation
- To eliminate excess CO2 and H+ from the body (correct)
- To decrease the concentration of H+ in the muscles
What is the main stimulus needed to increase breathing by stimulating chemoreceptors?
What is the main stimulus needed to increase breathing by stimulating chemoreceptors?
- Increase in O2 levels
- Decrease in CO2 levels
- Increase in CO2 levels
- Drop in O2 levels (correct)
Which gas has a greater solubility compared to O2?
Which gas has a greater solubility compared to O2?
What causes a decrease in blood pH that promotes O2 dissociation from hemoglobin?
What causes a decrease in blood pH that promotes O2 dissociation from hemoglobin?
At high altitudes, what physiological response helps maintain oxygen transport efficiency despite low saturation?
At high altitudes, what physiological response helps maintain oxygen transport efficiency despite low saturation?
What is the main function of the conducting zone in the respiratory system?
What is the main function of the conducting zone in the respiratory system?
Which structure in the respiratory system is responsible for closing off the windpipe during swallowing?
Which structure in the respiratory system is responsible for closing off the windpipe during swallowing?
What is the function of cilia in the nose?
What is the function of cilia in the nose?
What happens to cilia in the nose when exposed to cold air?
What happens to cilia in the nose when exposed to cold air?
Where does gas exchange directly occur in the respiratory system?
Where does gas exchange directly occur in the respiratory system?
Which structure in the respiratory system has larger folds that produce a deeper voice?
Which structure in the respiratory system has larger folds that produce a deeper voice?
What is the primary role of alveolar macrophages in the lungs?
What is the primary role of alveolar macrophages in the lungs?
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