The diameter of trachea is ____ (a) 1.5 cm (b) 2.5 cm (c) 3.5 cm (d) 0.5 cm
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The diameter of trachea is _ (a) 1.5 cm
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"(b) 2.5 cm
Reason:
Trachea or wind pipe is one of the most organs of human respiratory system. It runs through the neck in front of esophagus and extends into the ""thoracic cavity"".
It connects the nasopharynx. It is ""lined"" with ciliated epithelium and pseudo stratified columnar epithelium.
It has C-shaped ring of cartilage that prevent the collapse of trachea during inspiration. It is 12cm in length and 2.5 cm in diameter."
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