👉 The attachment fluid, also known as the secretory mucus or serous fluid, is a critical component of the mucosal layer found in various organs and tissues, particularly in the respiratory, gastrointestinal, and urogenital tracts. This fluid is produced by specialized cells known as goblet cells and is rich in mucins, glycoproteins that form a gel-like matrix. The primary function of the attachment fluid is to lubricate and protect the underlying epithelial surface, facilitating smooth movement of mucus, food, or other substances through the tract. Additionally, it plays a crucial role in trapping and neutralizing pathogens, toxins, and debris, thereby serving as a first line of defense against infections. The composition and viscosity of the attachment fluid can vary depending on physiological conditions, such as inflammation or infection, which can alter its properties to enhance protective functions.
