Discussion :: Biology
- The C shape of the tracheal cartilage is important because
|
A.
Divide the nasal cavity |
|
B.
Allows for expansion or contraction of the trachea |
|
C.
Provide a surface for the sense of smell |
|
D.
All of the above |
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Answer : Option B
Explanation :
The cartilaginous rings are C-shaped to allow the trachea to collapse slightly at the opening so that food can pass down the esophagus.
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