The legendary Colorado ski community of Aspen has been selected as the 2016 site of the induction ceremony and Skiing History Week for the U.S. Ski and Snowboard Hall of Fame, the week of April 5-10, 2016.
The next layer after the mucosa is called the submucosa. This layer is a thick layer of loose connective tissue. Although this layer does not have any sub-layers, it does have blood vessels, vessels belonging to the lymphatic system, and nerves, some of which control digestion.In some places, such as the small intestine, the submucosa also contains cells that secrete mucus onto the surface of the tract.After the submucosa is a layer called the muscularis externa. Except for the upper portion of the esophagus, this layer consists of smooth muscle.n some places, such as the small intestine, the submucosa also contains cells that secrete mucus onto the surface of the tract. After the submucosa is a layer called the muscularis externa. Except for the upper portion of the esophagus, this layer consists of smooth muscle.
The lymphatic system includes the bone marrow, spleen, thymus, lymph nodes, and lymphatic vessels (a network of thin tubes that carry lymph and white blood cells, or leukocytes). Lymphatic vessels branch, like blood vessels, into all the tissues of the body. The lymphatic system has three main functions. First, it returns excess interstitial fluid (also called tissue fluid) to the blood. Of the fluid that leaves the capillaries, about 90 percent is returned. The 10 percent that doesn't return becomes part of the tissue fluid that surrounds the tissue cells.