Podcast
Questions and Answers
What is the primary function of surfactant in the respiratory system?
What is the primary function of surfactant in the respiratory system?
- Close the alveoli
- Reduce surface tension of water (correct)
- Protect the alveoli from infections
- Increase surface tension of water
What does lung compliance measure?
What does lung compliance measure?
- Airflow resistance
- Volume change in the lungs per unit increase in pressure (correct)
- Airway resistance
- Lung volumes
How is airway resistance defined?
How is airway resistance defined?
- Resistance to airflow during exhalation only
- Resistance to blood flow in the lungs
- Resistance to airflow during inhalation only
- Pressure difference between the mouth and alveoli divided by airflow (correct)
Which device is used to measure lung volumes?
Which device is used to measure lung volumes?
What is the purpose of a flow-oriented incentive spirometer?
What is the purpose of a flow-oriented incentive spirometer?
What is the primary purpose of pulmonary ventilation?
What is the primary purpose of pulmonary ventilation?
How does air move into the lungs during pulmonary ventilation?
How does air move into the lungs during pulmonary ventilation?
Which aspect of the respiratory system is responsible for protecting the body from dust and microbes?
Which aspect of the respiratory system is responsible for protecting the body from dust and microbes?
What is the purpose of Fick’s Law of Diffusion in relation to gas exchange?
What is the purpose of Fick’s Law of Diffusion in relation to gas exchange?
Which statement best describes the mechanism of breathing during pulmonary ventilation?
Which statement best describes the mechanism of breathing during pulmonary ventilation?
In what way does lung compliance impact pulmonary ventilation?
In what way does lung compliance impact pulmonary ventilation?
What happens when the pressure inside the alveoli becomes lower than the atmospheric pressure?
What happens when the pressure inside the alveoli becomes lower than the atmospheric pressure?
During exhalation, what happens as a result of the ribs being depressed?
During exhalation, what happens as a result of the ribs being depressed?
Which muscles are mainly responsible for decreasing lung volume during expiration?
Which muscles are mainly responsible for decreasing lung volume during expiration?
What causes air to flow out of the lungs during expiration?
What causes air to flow out of the lungs during expiration?
What is the primary role of the medullary respiratory center in the brain stem?
What is the primary role of the medullary respiratory center in the brain stem?
Which area of the brain stem plays a significant role in controlling respiration?
Which area of the brain stem plays a significant role in controlling respiration?
What is the function of the Apneustic center in the respiratory system?
What is the function of the Apneustic center in the respiratory system?
Which factor directly affects the collapse of alveoli in the respiratory system?
Which factor directly affects the collapse of alveoli in the respiratory system?
How does the Pneumotaxic center affect breathing in the respiratory system?
How does the Pneumotaxic center affect breathing in the respiratory system?
What role does the cerebral cortex play in the respiratory system?
What role does the cerebral cortex play in the respiratory system?
Which center in the respiratory system sends signals to inhibit inspiration?
Which center in the respiratory system sends signals to inhibit inspiration?
What stimulates the DRG neurons in the respiratory system to resume breathing when consciousness is lost?
What stimulates the DRG neurons in the respiratory system to resume breathing when consciousness is lost?
What is the primary function of the preBötzinger complex in the brainstem?
What is the primary function of the preBötzinger complex in the brainstem?
Which group of neurons is responsible for generating impulses to the diaphragm and external intercostal muscles during normal quiet breathing?
Which group of neurons is responsible for generating impulses to the diaphragm and external intercostal muscles during normal quiet breathing?
During periods of inactivity, what happens to the diaphragm and external intercostals under the influence of the DRG?
During periods of inactivity, what happens to the diaphragm and external intercostals under the influence of the DRG?
Which area in the pons was formerly referred to as the inspiratory area?
Which area in the pons was formerly referred to as the inspiratory area?
What is the role of the Ventral Respiratory Group (VRG) in breathing?
What is the role of the Ventral Respiratory Group (VRG) in breathing?
In what situations does the Ventral Respiratory Group (VRG) become activated?
In what situations does the Ventral Respiratory Group (VRG) become activated?
What effect does surfactant have on the alveoli?
What effect does surfactant have on the alveoli?
How is lung compliance defined?
How is lung compliance defined?
What is the primary purpose of an airway resistance measurement?
What is the primary purpose of an airway resistance measurement?
How are lung volumes typically measured?
How are lung volumes typically measured?
What is the function of the chambers in a flow-oriented incentive spirometer?
What is the function of the chambers in a flow-oriented incentive spirometer?
