Mucus: In vertebrates, mucus ( ; adjectival form: "mucous") is a slippery secretion produced by, and covering, mucous membranes. Mucous fluid is typically produced from cells found in mucous glands.Cervical mucus plug: A cervical mucus plug (operculum) is a plug that fills and seals the cervical canal during pregnancy. It is formed by a small amount of cervical mucus.Goblet cell: A goblet cell is a glandular, modified simple columnar epithelial cell whose function is to secrete gel-forming mucins, the major components of mucus. The goblet cells mainly use the merocrine method of secretion, secreting vesicles into a duct, but may use apocrine methods, budding off their secretions, when under stress.Bombardier Challenger 300: The Bombardier BD-100 Challenger 300 is a super-mid-sized jet capable of traversing transcontinental distances. It is not developmentally related to the similarly named Challenger 600 series, or the 600-derived Challenger 800 series.Gastric mucosal barrier: The gastric mucosal barrier is the property of the stomach that allows it to contain acid.Diastase: A diastase (; from GreekATC code R05: ==R05C Expectorants, excluding combinations with cough suppressants==Trachealis muscle: The trachealis muscle is a smooth muscle that bridges the gap between the free ends of C-shaped cartilages at the posterior border of the trachea, adjacent to the esophagus.Bronchus: A bronchus, also known as a main or primary bronchus, is a passage of airway in the respiratory tract that conducts air into the lungs. There is a right bronchus and a left bronchus and these bronchi branch into smaller secondary and tertiary bronchi which branch into smaller tubes, known as bronchioles.Mooney viscometer: A mooney viscometer is an instrument used for measuring the mooney viscosity of a substance (mainly elastomers and rubbers).ACS Rubber Division Science & Technology Awards Invented by Melvin Mooney, it contains a rotating spindle and heated dies, the substance encloses and overflows the spindle and the mooney viscosity is calculated from the torque on the spindle.