Respuesta :
Epithelial cells are of different types and are involved in the protection of the body's organs.
The epithelial tissues are important and they are the ones present on the topmost layer of the body and are responsible for the protection of the skin, and also form the lining of the urethra, uterus, etc.
Epithelial cells are divided on the basis of cell shape and it layering and cell shape, they are divided into squamous epithelium, cuboidal epithelium, and columnar epithelium and on the basis of layering, they are divided into simple, stratified, and pseudostratified.
The pseudostratified epithelial cells also have cilia which are hair extensions and they also have unicellular glands called goblet cells which secrete the mucus.
Stratified epithelium differs from simple epithelium because they are multilayered so help in mechanical and chemical support.
Keratinized epithelia are also present which are the upper layers or apical layers having resistant protein called keratin some epithelia also have a lower layer or basal layers due to which these cells also show polarity.
Transitional is helpful in stretching and that's why found in the lining of the urinary bladder.
To know more about epithelial cells click at https://brainly.com/question/12806192
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