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Question
Which of the following is true for anatomical dead space?
Which of the following is true for anatomical dead space?
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Solution
The correct option is C It represents the volume of air from nostril to terminal bronchioles that do not take part in exchange of gases due to incompetent tissue
The volume of air remaining in the lungs after normal breathing is called the dead space air in the lungs. It is measured by approximately 150 mL in a normal person. It is the volume of the air passing from the nose or mouth to the level of the bronchioles. It is assumed that 30 percent (150 mL) of the tidal volume (500 mL) does not participate in the gas exchange.
The volume of air remaining in the lungs after normal breathing is called the dead space air in the lungs. It is measured by approximately 150 mL in a normal person. It is the volume of the air passing from the nose or mouth to the level of the bronchioles. It is assumed that 30 percent (150 mL) of the tidal volume (500 mL) does not participate in the gas exchange.
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