Märkäkalvojen

Märkäkalvojen is a term originating from Finnish that literally translates to "wet membranes." In biological contexts, it refers to the moist surfaces of living organisms, particularly those exposed to the external environment or internal cavities that are not dry. These membranes are crucial for various physiological functions.

Examples of märkäkalvojen include the mucous membranes lining the respiratory tract, digestive system, and urogenital tract. The conjunctiva of the eye, the lining of the mouth, and the surfaces of the gills in aquatic animals are also considered märkäkalvojen. These tissues are characterized by their ability to secrete mucus, which serves to trap foreign particles, lubricate surfaces, and provide a barrier against pathogens.

The moisture of these membranes is essential for gas exchange in the lungs and gills, nutrient absorption in the intestines, and sensory perception. Maintaining the hydration and integrity of märkäkalvojen is vital for overall health. Conditions that dry out these membranes, such as dehydration or certain diseases, can impair their function and increase susceptibility to infection. The presence of mucus on these surfaces is a hallmark of their healthy state.