Plural of bronchus; the two main branches of the windpipe that carry air into the left and right lungs.
From Greek 'bronchos' (windpipe or throat), possibly related to 'brenchesthai' (to smell or breathe). The term has been used since ancient Greek medicine to describe the major airway passages.
The two bronchos split off from the trachea like a tree trunk dividing into branches, and the left bronchus angles more sharply than the right one, which is actually why when someone accidentally inhales something, it's more likely to go down the right bronchus.
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