What occurs when an alveolus has increased resistance? A) It fills to a lower volume faster than normal. B) It fills to the same volume as a normal alveolus given sufficient time.... What occurs when an alveolus has increased resistance? A) It fills to a lower volume faster than normal. B) It fills to the same volume as a normal alveolus given sufficient time. C) It will fill with air slower than normal, regardless of time. D) It will remain collapsed and not fill with air.
Understand the Problem
The question is asking about the physiological response of an alveolus when it experiences increased resistance. The options provided offer different scenarios regarding its filling characteristics with air under these conditions.
Answer
It will fill with air slower than normal, regardless of time.
It will fill with air slower than normal, regardless of time.
Answer for screen readers
It will fill with air slower than normal, regardless of time.
More Information
When alveolar resistance increases, it decreases the airflow rate into the alveolus, making it fill slower than a normal alveolus. This occurs regardless of how much time is allowed, as the resistance opposes the air entering the alveolus.
Tips
A common mistake might be to think that given enough time, the alveolus would fill normally. However, due to increased resistance, it continually fills at a slower rate.
Sources
- Respiratory Physiology - ucl.ac.uk
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