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 major components of the lymphatic system include lymph, lymphatic vessels, and lymphatic organs that contain lymphoid tissues. Lymphatic tissue can also be found in other areas of the body, such as the skin, stomach, and small intestines. Its primary function is to promote the development of specific cells of the immune system called T-lymphocytes. 2  Once mature, these cells leave the thymus and are transported via blood vessels to the lymph nodes and spleen.