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.
Describe the muscularis mucosa of the mucosa. thin layer of smooth muscle - causes folds in the mucous membrane â increasing surface area for digestion and absorption. mucous secreted by the mucous membrane acts as a lubricant and protects the tract from.. digestive enzymes which are released for increased digestion.