More trip calculations. 1  driving time from Rome, Italy to Lucca, Italy. 2  reverse drive distance from Lucca, Italy to Rome, Italy. 3  halfway between Rome, Italy and Lucca, Italy. 4  hotels near Lucca, Italy. 5  flight distance from Rome, Italy to Lucca, Italy. 6  flight time from Rome, Italy to Lucca, Italy.
Surrounding each muscle fiber (cell) is a delicate external lamina composed primarily of reticular fibers. This external lamina is produced by the muscle fiber and, when observed through the light microscope, cannot be distinguished from the cell membrane of the muscle fiber, the sarcolemma.
Mucous membranes line all body cavities that open to the exterior of the body. They line the digestive, respiratory, urinary and reproductive tracts. The epithelium varies depending upon the location. The underlying connective tissue is areolar and is called lamina propria. Mucous membranes are kept wet either by secretions or the fluids which they contain. Their name is derived from thick, viscous secretion, mucus, that is secreted onto the surface of most mucous membranes.