Answer:
THERE ARE 20 RINGS OF TRACHEA..
There are many U shaped rings on trachea which helps trachea from collapsing.
hope it helps pls mark brainliest
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Answers & Comments
Answer:
THERE ARE 20 RINGS OF TRACHEA..
Answer:
There are many U shaped rings on trachea which helps trachea from collapsing.
hope it helps pls mark brainliest