What type of tissue lines the sinuses?

The sinuses are lined by a specific type of tissue known as mucous membrane, which is a specialized form of epithelial tissue that is adapted for secretion and absorption. Mucous membranes contain goblet cells, which produce mucus to trap dust and pathogens, helping to keep the airways clear and moist. This mucus also serves to warm and humidify the air as it passes through the nasal cavity and into the lungs.

Mucous membranes are crucial in the sinuses because they play a role in protecting against infection and maintaining the health of the respiratory system. Their structure supports the functionality of the sinuses, as the mucus produced helps prevent congestion and allows for the proper drainage of sinus fluid.

Epithelial tissue is a broader category that includes various types of tissues that line surfaces and cavities, but in the context of the sinuses, the specific designation of mucous membrane is more accurate. Other types of tissues like fibrous tissue and cartilaginous tissue do not serve the purpose of lining the sinuses or performing the same protective and functional roles.