Class 11 Biology Breathing and Exchange of Gases Human Respiratory System

Medium

Which structure is seen in the trachea so that the respiratory tract remains open?

A
$C$-shaped cartilaginous rings
B
Bony rings
C
Muscular rings
D
Fibrous rings

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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Human Respiratory System

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