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Understanding Body Membranes: Types and Functions

Explore the 4 major types of membranes in the body - Cutaneous, Mucous, Serous, and Synovial. Learn how each membrane functions and protects the body's vital organs and systems.

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Understanding Body Membranes: Types and Functions

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  1. Membranes

  2. Body Membranes… 4 major types of membranes in the body • Cutaneous membranes • Mucous membranes • Serous membranes • Synovial membranes

  3. Cutaneous membrane… • The cutaneous membrane is actually the skin • It covers the entire body and is made up of squamous epithelial cells • Body’s first line of defense system against diseases.

  4. Mucous membranes… • Typically consist of columnar epithelial cells • Produce a mucus, which provides protection to the tissue they line, such as the cavities that open to the outside of the body • The digestive tract – opens via the mouth and anus • The respiratory tract – opens to the outside via the mouth and nose • The reproductive tract – opens to the outside via the vaginal opening • The urinary tract – open to the outside via the urethral opening

  5. Serous membranes… • Produce serous fluid, which provides protection for the tissue they cover • Are made of epithelial cells that are supported by connective tissue • Line internal cavities of the body that are not open to the outside • The pleural membranes – cover the lungs • The peritoneal membranes – cover organs such as the stomach and liver • The pericardial membrane – covers the heart

  6. Synovial membranes • Produce synovial fluid • This fluid helps to reduce abrasion at the joint site • They are made of connective tissue • They line the joints of the body

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