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Questions and Answers
What is the primary function of alveoli in the respiratory system?
What is the primary function of alveoli in the respiratory system?
- Site of gas exchange (correct)
- Produce mucus to trap pathogens
- Warm the inhaled air
- Generate oxygen for the body
Which statement accurately describes pulmonary circulation?
Which statement accurately describes pulmonary circulation?
- It has the same pressure as the systemic circuit
- Blood flow rate is low due to high resistance
- It contains a large proportion of the total blood volume (correct)
- Pressure in the circuit is primarily due to high resistance
How does airflow occur according to Boyle's Law during inspiration?
How does airflow occur according to Boyle's Law during inspiration?
- Lung pressure decreases below atmospheric pressure (correct)
- Lung volume decreases causing atmospheric air to move out
- Atmospheric pressure increases within the lungs
- The alveoli shrink to draw air in from the atmosphere
What percentage of atmospheric air is composed of oxygen?
What percentage of atmospheric air is composed of oxygen?
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What determines the flow of air according to gas laws?
What determines the flow of air according to gas laws?
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Which factor contributes to the high surface area of alveoli for optimal gas exchange?
Which factor contributes to the high surface area of alveoli for optimal gas exchange?
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