"bronchial tube"的定义和意义

What is "bronchial tube"?

The bronchial tube, also known as the bronchi, is the main airway passage in the respiratory system that branches off from the trachea and extends into the lungs. They further divide into smaller bronchioles, facilitating the passage of air into the lungs. The bronchial tubes are lined with ciliated cells and mucus-producing glands, which help trap foreign particles and facilitate their removal from the respiratory system. These tubes play a vital role in the process of respiration by delivering air to the lungs and maintaining proper airflow for efficient gas exchange.