By measuring telomeres, some scientists believe they can determine biological age, which doesn't always equal chronological age. That means some people may be biologically older or younger than their age, said Jerry Shay, professor and vice chairman of cell biology at UT Southwestern Medical Center in Dallas.
It is of ectodermal origin and is continuous with the skin at various body openings such as the eyes, ears, nose and mouth, the urethral opening and the 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.
Mucous membranes-secrete a thick slimy material called mucus that keeps the membranes moist and soft Connective Tissue membrane-secretes a thick colorless lubricating fluid called synovial fluid which helps reduce the friction between the opposing surfaces of bones in movable joints.xplain the structure of a mucous membrane. Mucous membranes are: - epithelial membranes that line body surfaces opening directly to the exterior, such as the lining of the respiratory, digestive, urinary, and reproductive tracts.