To fasten or secure with or as if with a cord, rope, or strap: tied the kite to a post; tie up a bundle. 2. To fasten by drawing together the parts or sides and knotting with strings or laces: tied her shoes. 3. a. To make by fastening ends or parts: tie a knot. b. To put a knot or bow in: tie a neck scarf.
Mucous cells of the stomach lining secrete mucus (pink) into the lumen. In vertebrates, mucus (/mjuËkÉs/ MYOO-kÉss; adjectival form: mucous) is a slippery secretion produced by, and covering, mucous membranes. Mucous fluid is rich in glycoproteins and water and is typically produced from cells found in mucous glands.
The term mucous membrane comes from the fact that the major substance secreted from the membranes is mucus; the principal constituent of mucus is a mucopolysaccharide called mucin. mucus Surface mucous cell on the stomach lumen secreting mucus (pink stain).