A somewhat archaic or rare term for the bronchial tubes or respiratory passages in the lungs.
From Latin bronchium, derived from Greek bronchos (windpipe). This term represents an earlier attempt at Latinizing the Greek anatomical term before more standardized naming conventions emerged.
Bronchium is largely obsolete in modern medicine, having been replaced by more precise anatomical terminology like 'bronchi' and 'bronchioles'—it's a great example of how medical language evolves and older terms fade away as science becomes more specific.
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