Which of the following prevent collapsing of trachea?
Muscles
Diaphragm
Ribs
Cartilaginous rings
A
Muscles
B
Ribs
C
Cartilaginous rings
D
Diaphragm
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Solution
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The cartilage rings in the trachea prevent the trachea from collapsing during the absence of air and also protect it. These cartilaginous rings are C-shaped.
So, the correct answer is option D.
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