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
In addition to the staple of basal cells, ciliated cells and goblet cells, the respiratory epithelium also contains brush cells, endocrine cells (or small granule cells, function not clear) , surfactant-producing cells (or Clara cells) , and serous cells. Epithelium and underlying lamina propria are called the mucosa. The lamina propria consists of loose connective tissue with many elastic fibres, which condense at the deep border of the lamina propria to form an elastic membrane.