What prevents the trachea from collapsing?

Practice MCQ for SSC, UPSC, RRB Exams

A. Smooth muscles A.

B. Bony rings B.

C. Ciliated epithelium C.

D. Cartilaginous rings D.

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

The structure that prevents the trachea from collapsing is cartilaginous rings. Specifically, these are C-shaped rings of cartilage that provide support and keep the airway open during breathing.
Cartilaginous rings: These rings, made of hyaline cartilage, are incomplete, forming a C shape. The open part of the C faces towards the back of the trachea, allowing the esophagus to expand during swallowing. However, the rings provide enough rigidity to prevent the trachea from collapsing, especially during inhalation when air pressure decreases.

Practice MCQ for SSC, UPSC, RRB Exams

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

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