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21 April, 00:34

Which of the following maintains the patency (openness) of the trachea? a. surface tension of water b. surfactant production c. C-shaped cartilage rings d. pseudostratified ciliated epithelium

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  1. 21 April, 03:50
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    The correct option is C) C-shaped cartilage rings

    Explanation:

    The trachea is commonly known as the wind-pipe. The trachea can be described as about a 4 inch long passage from which the air travels into the bronchi and lungs. The pathway of the trachea is kept open by C - shaped cartilages which are lined all over in the trachea. The C-shaped cartilages protects as well as maintain the shape of the wind-pipe. The rigidity of the trachea arises from the C-shaped cartilages.
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