Q.

What is the shape of the cartilagenous rings that line up the trachea?  

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a

Square shaped

b

Circular rings

c

Rectangular rings

d

C shaped

answer is B.

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Detailed Solution

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The trachea is lined up by C-shaped cartilaginous rings. 

These rings are made of hyaline cartilage and provide structural support to the trachea, assisting in its shape maintenance and prevention of collapse. 

The trachea, also known as the windpipe, is an important part of the respiratory system.

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