Mucus (also called sputum) is produced by goblet cells and submucosal glands. Overproduction or hypersecretion can occur due to dysfunction of these cells, an infection, inflammation, irritation, or debris in the respiratory tract.
Mucus (also called sputum) is produced by goblet cells and submucosal glands. Overproduction or hypersecretion can occur due to dysfunction of these cells, an infection, inflammation, irritation, or debris in the respiratory tract.