Portland, Maine â For the first time, scientists have figured out how to determine the age of a lobster â by counting its rings, like a tree. Nobody knows how old lobsters can live to be; some people estimate they live to more than 100.
The lamina propria (more correctly lamina propria mucosae) mucosÃ¦ is a thin layer of loose connective, tissue or dense irregular connective, tissue which lies beneath the epithelium and together with the epithelium constitutes the. mucosa
The mucosa serves to line the cavity of the tract. The mucosa consists of three sub-layers called the epithelium, the lamina propria, and the muscularis mucosae. In most of the digestive tract, the cells in the epithelium are shaped like columns.his mucus lubricates the digestive tract. The lamina propia is a sub-layer that is made of loose connective tissue. The muscularis mucosae is a sub-layer of smooth muscle. The next layer after the mucosa is called the submucosa. This layer is a thick layer of loose connective tissue.