Explain the structure of bronchi with help of a neat diagram and label on it (1)trachea (2)bronchiole
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Explanation of structure
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The bronchi( or bronchus in singular) form as the trachea starts dividing into two branches progressing towards the lungs.
The smooth muscles and cartilage that form the bronchi provide them with stability.
The bronchus leads to the formation of smaller branches known as bronchioles, further forming alveolar sacs and finally alveoli, where the exchange of gases( oxygen and carbon dioxide) takes place.
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