nyálkahártyai

Nyálkahártyai refers to the mucous membranes, which are thin layers of tissue that line various cavities and canals of the body. These membranes secrete mucus, a slippery and protective substance. The primary function of mucus is to keep the surfaces moist and lubricated, which prevents them from drying out and becoming damaged. Mucus also plays a crucial role in trapping foreign particles, such as dust, bacteria, and viruses, preventing them from entering deeper tissues. These trapped particles are then usually expelled from the body through physical mechanisms like coughing or sneezing, or by being moved along by cilia, tiny hair-like structures present on the surface of some mucous membranes.

Mucous membranes are found in numerous locations, including the respiratory tract (nose, throat, lungs), the digestive tract (mouth, esophagus, stomach, intestines), the urinary tract, the reproductive tract, and the conjunctiva of the eyes. The composition and specific functions of the mucous membranes can vary depending on their location. For instance, the mucous membranes in the respiratory tract are involved in gas exchange and filtering the air, while those in the digestive tract are crucial for nutrient absorption and protection against stomach acid. Inflammation of the mucous membranes is known as mucositis.