MEMBRANES
A mucous membrane is an epithelial tissue that secretes mucus and that lines many body cavities and tubular organs including the gut and respiratory passages. It is continuous with the skin near various parts of your body, including your eyes, ears, inside the nose, inside the mouth, and the urethral opening and anus. Some mucous membranes secrete mucus, a thick protective fluid. The function of the membrane is to stop pathogens and dirt from entering the body and to prevent bodily tissues from becoming dehydrated.
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Connective tissue is tissue that connects, supports, binds, or separates other tissues or organs. It typically has relatively few cells formed in a matrix, often with collagen or other fibers, and including cartilaginous, fatty, and elastic tissues. It is located in tendons, which connect muscles to bones, and ligaments, which connect bones to bones. |
A serous membrane is a mesothelial tissue, or a tissue that produces lubricating fluid, that lines certain internal cavities of the body, forming a smooth, transparent, two-layered membrane. Their primary function is to secrete a lubricating fluid at the body cavities to reduce friction from muscle movement A synovial membrane is a specialized connective tissue that lines the inner surface of capsules of cavities of joints and tendon sheaths. The synovial membrane is primarily responsible for maintaining and making synovial fluid, which has a lubricating function. |