Mucin

Definition

Mucin is a glycoprotein component of mucus, which serves to protect and lubricate surfaces such as the digestive tract. It plays a crucial role in trapping pathogens and facilitating their removal from the body.

5 Must Know Facts For Your Next Test

1. Mucin is secreted by goblet cells in the epithelial lining of the digestive tract.
2. It forms a gel-like layer that traps microorganisms, preventing them from adhering to and invading host tissues.
3. Mucin contains carbohydrate chains that can bind water, making it highly viscous and slippery.
4. Alterations in mucin production or structure can contribute to various digestive diseases, including infections.
5. Normal microbiota in the gut can interact with mucin, influencing its composition and function.

Review Questions

Related terms

Goblet Cells:

Specialized epithelial cells responsible for secreting mucin.

Microbiota:

The community of microorganisms living in a particular environment, such as the gut.

Glycoproteins: Proteins with carbohydrate chains attached, important for various biological functions including forming mucin.