What procedure involves the examination of bronchi using a bronchoscope?

The procedure that involves the examination of bronchi using a bronchoscope is bronchoscopy. This medical technique allows physicians to directly visualize the airways and lungs, providing critical insight for diagnosing and managing respiratory issues. During bronchoscopy, a flexible tube with a light and camera attached is inserted through the nose or mouth and down into the lungs, enabling the detection of abnormalities such as tumors, inflammation, or infection.

Bruxism refers to the involuntary grinding or clenching of teeth, often associated with stress or sleep disorders, which is unrelated to examining the bronchi. Bronchiectasis is a condition characterized by the abnormal widening of the bronchi, which can lead to frequent infections, but it is not a procedure like bronchoscopy. Byasma seems to be a misspelling or a misrepresentation, possibly intended to refer to asthma, which is a chronic condition that affects the airways but does not specifically denote a procedure. Thus, bronchoscopy is the precise term for the procedure described in the question.