Why rings of cartilage are present in trachea in throat region?
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B/cz oesophagus is found just posteriorly of trachea in thorax region and if cartilagenous ring not found then then food enters into oesophagus and trachea become collapse..
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B/cz oesophagus is found just posteriorly of trachea in thorax region and if cartilagenous ring not found then then food enters into oesophagus and trachea become collapse..
Explanation:
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