Definition synovial fluid1/22/2024 ![]() Unlike serous membranes, they do not have a layer of epithelium. Like serous membranes, they line cavities that do not open to the outside. Synovial membranes are connective tissue membranes that line the cavities of the freely movable joints such as the shoulder, elbow, and knee. Synovial membranes and meninges belong to this category. Connective Tissue MembranesĬonnective tissue membranes contain only connective tissue. For example, the serous membrane that lines the thoracic cavity and covers the lungs is called pleura. Serous membranes have special names given according to their location. Serous fluid lubricates the membrane and reduces friction and abrasion when organs in the thoracic or abdominopelvic cavity move against each other or the cavity wall. Serous membranes are covered by a thin layer of serous fluid that is secreted by the epithelium. Serous membranes line body cavities that do not open directly to the outside, and they cover the organs located in those cavities. Other examples include the respiratory, excretory, and reproductive tracts. ![]() The entire digestive tract is lined with mucous membranes. ![]() These membranes, sometimes called mucosae, line the body cavities that open to the outside. Mucous membranes are epithelial membranes that consist of epithelial tissue that is attached to an underlying loose connective tissue. The two main types of epithelial membranes are the mucous membranes and serous membranes. Epithelial MembranesĮpithelial membranes consist of epithelial tissue and the connective tissue to which it is attached. They can be categorized into epithelial and connective tissue membrane. Where microbiology data are computerized, personnel regularly obtain electronic line listings of all ABCs sterile site isolates.Body membranes are thin sheets of tissue that cover the body, line body cavities, and cover organs within the cavities in hollow organs. In hospitals without computerized microbiology data, surveillance personnel call designated microbiology laboratory contacts regularly to identify new cases and request isolate submission. Therefore, for case identification, ABCs personnel regularly contact microbiology laboratories in acute care hospitals and reference laboratories processing sterile site specimens for residents of the surveillance area. Isolation from a normally sterile site is essential to the case definition.
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