Alveoli is made of 3 type of tissue what is it can you explain its individual function

Hi,
Tissues that make up the lungs include bronchioles, epithelial cells, smooth muscle cells and alveoli, according to Centre of the Cell. Many of the lungs' tissues consist of several different cell types.The lungs are located in the thoracic cavity of the body, and they take up most of the space in that area, according to InnerBody. The lungs are large, spongy organs that are surrounded by a double layer of serous membranes. The outer layer of the serous membrane is called the parietal pleura, and the inner layer, or visceral pleura, is the section that covers the lung surface.