The alveoli in the lungs are made of a wet wall that is one cell thick with a network of capillaries to facilitate gas exchange.
The Respiratory membrane: The wall of the alveoli are composed primarily of a single layer of squamous epithelial cells, called type I cells, surrounded by a flimsy basement membrane. See page 815 anatomy and physiology 8th
Tunica Intima is the innermost layer of the wall of the artery. The wall is consist of simple squamous epithelium which is called endothelium.
Ciliated and pseudostratified columnar epithelial cells plus goblet cells for the secretion of mucin.
The outer layer of our skin is composed of dead epithelial cells.
epithelioma
capillaries
The endocrine system is composed of several ductless glands; clusters of cells located within certain organs, and isolated endocrine cells in the epithelial lining of the gastrointestinal and respiratory systems.
epithelial tissue
epidermis
Epithelial tissue are closely connected and have a basal membrane, even though not all epithelial cells are necessarily connected to the basal membrane. The so called simple epithelial tissue subgroup does.
mucosa
Blood capillaries