How Does the Total Cross-Sectional Area of the Tracheobrochial Tree

question 28

Multiple Choice

How does the total cross-sectional area of the tracheobrochial tree change from the trachea to the respiratory zone?

• A) It increases steadily to the terminal bronchioles then increases significantly in the respiratory zone
• B) It decreases slightly to the terminal bronchioles then decreases significantly
• C) It remains steady throughout the tracheobronchial tree
• D) It increases steadily through the lobar bronchi then increases significantly through the remaining airway generations

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