👉 The Mar Fluid, also known as the Mucus Plasma, is a complex mixture of proteins, glycoproteins, and other substances found in the mucus lining the respiratory, gastrointestinal, and reproductive tracts of many organisms, including humans. In the context of human physiology, it acts as a protective barrier against pathogens, foreign particles, and irritants by trapping them and facilitating their removal. This fluid's viscoelastic properties allow it to maintain its structure while still being able to flow and adapt, ensuring effective defense mechanisms and lubrication in various bodily functions.