Question

The trachea and bronchi are provided with C-shaped cartilaginous rings which

• A. Are responsible for sound production.
• B. Give them support and prevent their collapse.
• C. Divide trachea and bronchi.
• D. Give support to lungs.

Answer 1

The correct option is B Give them support and prevent their collapse.

The cartilage ring is C-shaped because the trachea presses against the oesophagus. They prevent collapsing in absence of air. In humans, there are about 15 to 20 incomplete C-shaped cartilaginous rings.

Hence the correct option is B.