Certified Biomedical Equipment Technician (CBET) Practice Exam

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What is the average total lung capacity in milliliters?

2500 mL

3500 mL

5800 mL

The average total lung capacity for an adult human is approximately 5800 mL, making this option the correct answer. Total lung capacity is defined as the maximum amount of air that the lungs can hold and is composed of various lung volumes including tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume.

This value can vary based on several factors, including age, sex, body composition, and overall health. However, 5800 mL is a commonly accepted average for healthy adults. The other options, while they represent volumes associated with lung capacity, do not accurately reflect total lung capacity as defined in pulmonary physiology. For example, values such as 2500 mL and 3500 mL are more representative of functional residual capacity or other specific lung volumes rather than the total lung capacity itself.

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7000 mL

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