Bronchial function refers to the role of the bronchi, which are the large air passages that branch from the trachea into the lungs. They help transport air in and out of the lungs, facilitating the exchange of oxygen and carbon dioxide. The bronchi are lined with mucus and tiny hair-like structures called cilia, which help trap and clear out dust, pathogens, and other particles. Proper bronchial function is essential for effective breathing and overall respiratory health. Conditions such as asthma or chronic obstructive pulmonary disease (COPD) can impair bronchial function, leading to difficulty in breathing and reduced oxygen supply to the body. Maintaining healthy bronchial function is crucial for optimal lung performance.