What is mucosa?

Mucosa, also known as mucous membrane, refers to the specific type of tissue that lines various cavities and surfaces within the body, including those in the digestive, respiratory, and urogenital tracts. This specialized tissue is made up of epithelial cells that secrete mucus, which serves numerous functions such as protecting the underlying tissues, lubricating surfaces, and facilitating the passage of materials.

Mucosa plays a crucial role in health by providing a barrier against pathogens and contributing to the immune response. Its presence in body systems highlights its importance in maintaining moisture and facilitating various physiological processes.

Other choices relate to different types of tissues: bone tissue is a hard structure that forms the skeleton; fibrous tissue serves as connective material between muscles; and articular cartilage is a smooth tissue covering the ends of bones in joints. Each of these has distinct functions that differ significantly from the role and features of mucosa.