alleryStart learning →What defines a bronchopulmonary segment?
AA lobe drained by one pulmonary vein
BA lobule fed by one small bronchiole
CA wall of connective tissue between lobules
DA lobe division with its own tertiary bronchus
Answer & Solution
Correct answer: D. A lobe division with its own tertiary bronchus
1. A bronchopulmonary segment is a division of a lobe, and each lobe houses several of them.
2. Each segment receives air from its own tertiary bronchus.
3. Each is also supplied with blood by its own artery, so the fourth option is correct.
4. A lobule fed by a large bronchiole is a smaller subdivision, so the second option names the wrong level.
5. The third option describes an interlobular septum instead of a segment.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.2 The Lungs_
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