Podcast
Questions and Answers
What is the term used to describe the volume of air entering or leaving the lungs during one breath?
What is the term used to describe the volume of air entering or leaving the lungs during one breath?
- Vital capacity
- Residual volume
- Tidal volume (correct)
- Inspiratory capacity
What is a major function of pseudostratified columnar ciliated epithelium in the upper respiratory tract?
What is a major function of pseudostratified columnar ciliated epithelium in the upper respiratory tract?
- Absorb gases
- Improve movement of air into and out of the lungs
- Keep the trachea open
- Trap dust particles in incoming air (correct)
What happens to airway resistance in conditions like asthma?
What happens to airway resistance in conditions like asthma?
- Increased tidal volume
- Increased forced expiratory volume
- Increased functional residual capacity
- Increased respiratory rate (correct)
What is the smallest airway of the conducting zone in the respiratory system?
What is the smallest airway of the conducting zone in the respiratory system?
What is a characteristic of gas exchange in the respiratory system?
What is a characteristic of gas exchange in the respiratory system?
Which term describes the volume of air moved into or out of the lungs during normal breathing?
Which term describes the volume of air moved into or out of the lungs during normal breathing?
What percentage of muscle fibers associated with a motor unit are activated during isokinetic contraction?
What percentage of muscle fibers associated with a motor unit are activated during isokinetic contraction?
In a spirometry test, what does a high FEV1/FVC ratio indicate?
In a spirometry test, what does a high FEV1/FVC ratio indicate?
Which of the following pulmonary function tests provides information on gas exchange efficiency?
Which of the following pulmonary function tests provides information on gas exchange efficiency?
What can a spirometer NOT measure directly?
What can a spirometer NOT measure directly?
In respiratory physiology, what is the product of tidal volume and respiratory frequency known as?
In respiratory physiology, what is the product of tidal volume and respiratory frequency known as?
What would a low FEV1 value in a spirometry test indicate?
What would a low FEV1 value in a spirometry test indicate?
What is the ambient partial pressure of oxygen (pO2) at the summit of Mount Everest where the pressure of dry atmospheric air is 231mmHg?
What is the ambient partial pressure of oxygen (pO2) at the summit of Mount Everest where the pressure of dry atmospheric air is 231mmHg?
During inspiration, which pressure rises?
During inspiration, which pressure rises?
What happens to the intrapulmonary pressure during the initial phase of inspiration?
What happens to the intrapulmonary pressure during the initial phase of inspiration?
At the end of inspiration, where does the alveolar gas pressure (when there is no airflow) equilibrate?
At the end of inspiration, where does the alveolar gas pressure (when there is no airflow) equilibrate?
During expiration, which pressure falls?
During expiration, which pressure falls?
When CO2 diffuses into blood in systemic capillaries, what happens to most of it?
When CO2 diffuses into blood in systemic capillaries, what happens to most of it?
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