Table 1.

Characteristics and representative of different kinds of epithelium

Kinds of epithelium	Characteristics of epithelium	Typical epithelial tissues
Covering epithelium	1.Composed of regular dense epithelial cells and a small amount of intercellular stroma 2. Can evolve into glandular epithelium and sensory epithelium during the development of embryos.	Palatal epithelium Alveolar epithelium Corneal epithelium Airway epithelium Gastric epithelium Ovarian epithelium ...
Glandular epithelium	Specialized for secretory function	Urogenital sinus epithelium Breast epithelium Thymic epithelium...
Metastatic epithelium	The shape and level may vary with the contraction or expansion of the host organ	Ureteral epithelium Urinary epithelium Bladder epithelium...
Sensory epithelium	Specialized for special sensory functions	Sensory epithelium...