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
Correct Answer: Allows for expansion or contraction of the trachea
The cartilaginous rings are C-shaped to allow the trachea to collapse slightly at the opening so that food can pass down the esophagus.