nyálkahártyától

Nyálkahártyától is a Hungarian term that translates to "mucous membrane" in English. Mucous membranes are soft, moist tissues that line various cavities and passages of the body, particularly those that open to the exterior. These include the lining of the digestive tract, the respiratory tract, the urinary tract, and the reproductive tract. They are also found on the inner surface of the eyelids and within the middle ear.

The primary function of mucous membranes is to secrete mucus, a viscous fluid that lubricates and protects the underlying tissues. Mucus traps foreign particles such as dust, bacteria, and viruses, preventing them from entering the body. It also plays a role in the immune system by containing antibodies and enzymes that can neutralize pathogens. In the digestive system, mucus aids in the passage of food. In the respiratory system, it helps to humidify inhaled air.

The cells that make up mucous membranes are often specialized for secretion and absorption. They can vary in structure depending on their location and specific function. For example, the mucous membrane lining the small intestine has villi and microvilli to increase its surface area for nutrient absorption, while the mucous membrane of the trachea contains cilia that beat to move mucus and trapped particles upwards and out of the airways. Diseases affecting mucous membranes can lead to a variety of symptoms, including inflammation, dryness, excessive mucus production, or impaired function.