Quiz: Understanding the Respiratory System
Quiz: Understanding the Respiratory System
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Question 1 of 7
1. Question
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The alveoli are tiny air sacs at the end of the bronchioles where gas exchange takes place. Oxygen diffuses into the blood and carbon dioxide diffuses out to be exhaled.
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Question 2 of 7
2. Question
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It is the other way around. The right lung has three lobes, and the left lung has two lobes. The left lung is slightly smaller to make room for the heart.
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Question 3 of 7
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The diaphragm is a dome-shaped muscle beneath the lungs. When it contracts, it flattens and creates negative pressure in the chest, pulling air into the lungs.
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Question 4 of 7
4. Question
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The adult lungs contain roughly 300 million alveoli, providing an enormous surface area for gas exchange — about the size of a tennis court.
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Question 5 of 7
5. Question
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FEV1 stands for Forced Expiratory Volume in one second. It measures how much air you can blow out in the first second of a forced exhalation and helps diagnose obstructive lung diseases.
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Question 6 of 7
6. Question
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A pulse oximeter measures blood oxygen saturation (SpO2), not carbon dioxide. Normal SpO2 readings are typically between 95% and 100%.
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Question 7 of 7
7. Question
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Cilia are tiny hair-like structures that line the nasal cavity and airways. They move in coordinated waves to push trapped particles and mucus away from the lungs, helping to keep the airways clean.
