Mucous cell

Mucous cell is a type of epithelial cell that is found in various parts of the body, including the respiratory system, digestive system, and reproductive system. These cells are responsible for the production and secretion of mucus, a thick, slippery substance that serves several important functions in the body.

Function

Mucous cells produce mucus, which serves to protect and lubricate the surfaces of the body's internal organs. In the respiratory system, for example, mucus traps dust and other particles, preventing them from reaching the lungs. In the digestive system, mucus helps to protect the lining of the stomach and intestines from the corrosive effects of stomach acid.

Structure

Mucous cells are typically columnar in shape, with a height greater than their width. They contain a large number of goblet cells, which are specialized for mucus production. The cytoplasm of mucous cells is filled with granules of mucus, which can be released when the cell is stimulated.

Location

Mucous cells are found in several different parts of the body. In the respiratory system, they are found in the lining of the trachea and bronchi. In the digestive system, they are found in the lining of the stomach and intestines. In the reproductive system, they are found in the cervix and vagina.

Clinical significance

Abnormalities in the function or number of mucous cells can lead to a variety of health problems. For example, cystic fibrosis is a genetic disorder that causes the mucus produced by these cells to be abnormally thick and sticky, leading to problems with breathing and digestion. On the other hand, gastritis and peptic ulcers can occur if there is not enough mucus to protect the stomach lining from acid.

See also

• Epithelial cell
• Goblet cell
• Mucus

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