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 large aggregates of lymphatic tissue in the ileum are called Peyer's patches. A lymph node is an encapsulated lymphatic organ. The random distribution of lymphocytes seen in the lamina propria of the respiratory tract, genitourinary tract, and gastrointestinal tract is called diffuse lymphatic tissue.nswer: d. Bone marrow, lymph nodes, the spleen and the thymus are all part of the lymphatic system. Most lymphatic organs are made of a framework of reticular fibers and reticular cells. However, the thymus is made of epithelioreticular cells instead.