Which feature characterizes the right primary bronchus compared to the left primary bronchus?

• A. It is shorter
• B. It is wider and more prone to aspiration
• C. It has more branches
• D. It contains more cartilage

Answer: (B)

The right primary bronchus is characterized by being wider and shorter than the left primary bronchus. This anatomical structure makes it more prone to aspiration. When foreign objects or aspirated materials enter the trachea, they are more likely to pass into the right bronchus due to its larger diameter and straighter angle in relation to the trachea.

In contrast, the left primary bronchus is longer and has a more acute angle as it branches off from the trachea, positioning it less favorably for aspiration. Thus, understanding this anatomical distinction is crucial in clinical situations where the risk of aspiration can lead to pneumonia or other respiratory complications.

While the right bronchus does have more branches than its left counterpart, this is not the most distinguishing feature relevant to aspiration risk. The nature of the bronchial architecture primarily influences where aspirated objects are likely to go, making the size and shape of the right primary bronchus a key factor in its propensity for aspiration.