Why is the Trachea Supported by C-Shaped Cartilage Rings Instead

Question

Why is the trachea supported by C-shaped cartilage rings instead of O-shaped (complete rings)?
A)To hold it open all the time
B)To allow the esophagus to expand when swallowing
C)To produce sound as air passes through

Accepted Answer

The trachea is supported by C-shaped cartilage rings instead of complete rings to allow the esophagus, which is located directly behind the trachea, to expand when swallowing food. This design ensures that the trachea remains open for air passage while still accommodating the movement and expansion of the esophagus during the intake of food.