Vesicular breath sounds are normally heard over most of the lung surface except which areas?

• A. Upper intrascapular area
• B. Area beneath the manubrium
• C. Both A and B
• D. The costal margins

Answer: (C)

Vesicular breath sounds come from air moving through the small airways and alveoli and are soft and low-pitched, heard over most of the lung surface, especially the peripheral fields. They’re not typical over central airways where louder, higher-pitched bronchial sounds dominate because air travels through larger passages there. Specifically, the area beneath the manubrium sits right over the trachea, so bronchial-type sounds are expected rather than vesicular. Likewise, in the upper intrascapular region, the scapula and overlying tissues alter sound transmission and the central airways can mask the peripheral vesicular pattern. Therefore these two areas are not where vesicular sounds are normally heard, whereas vesicular sounds are typically present over the costal margins and other peripheral lung surfaces.