American Academy of Professional Coders (AAPC) Practice Exam

Which of the following membranes is involved in protecting and compartmentalizing organs to prevent infection?

1. Mucous Membrane

2. Serous Membrane

3. Synovial Membrane

4. Meninges

The correct answer is: Serous Membrane

The serous membrane is the correct answer because it plays a critical role in protecting and compartmentalizing organs within the body. This membrane is comprised of two layers: the parietal layer, which lines the wall of the body cavity, and the visceral layer, which covers the organs themselves. The serous fluid produced by the serous membrane reduces friction between the moving organs, such as the heart and lungs, and helps to create a barrier against infection. One of the main functions of the serous membrane is to prevent the spread of infection by compartmentalizing different organs within their respective cavities, such as the thoracic cavity and abdominal cavity. This organization helps localize any potential infections, thereby enhancing the body's ability to manage and respond to pathogens. The other membranes mentioned have different primary functions. For instance, the mucous membrane primarily secretes mucus to lubricate and protect internal surfaces, but it does not offer the same level of compartmentalization. The synovial membrane produces synovial fluid to lubricate joints and does not provide the same protective or compartmentalizing functions for internal organs. The meninges are layers of protective tissue surrounding the central nervous system, particularly the brain and spinal cord, but they are not involved in the