How Does the Histology of Bronchi and Bronchioles Differ?
The bronchi and bronchioles play a crucial role in conducting air to the alveoli. The bronchi are lined with respiratory epithelium and contain cartilage plates that provide structural support. As the bronchi branch into smaller bronchioles, the cartilage is replaced by smooth muscle, and the epithelium changes to a simpler columnar or cuboidal form. This allows for greater flexibility and control over airflow.
