Epithelial cells,lymphoid cells, Peyer's patches and Ileal Villi are four distinctive tissue types found in the ileum. Some consider the valvular tissue a separative tissue. See the article linked below.
2006-11-04 07:42:49
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answer #1
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answered by david42 5
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Mucosa? Serosae? adipose?
Wait, r u talkin bout the ileum by itself or the whole small intestines.
2006-11-04 07:40:39
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answer #2
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answered by Halleigh F 2
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* Areolar (or loose) connective tissue. Areolar connective tissue holds organs and epithelia in place, and has a variety of proteinaceous fibers, including collagen and elastin. Areolar connective tissue is the most widely distributed connective tissue type in vertebrates. It is a pliable, mesh-like tissue with a fluid matrix and functions to cushion and protect body organs. Cells called fibroblasts are widely dispersed in this tissue; they are irregular branching cells that secrete strong fibrous proteins and proteoglycans as an extracellular matrix. The cells of this type of tissue are generally separated by quite some distance by a gel-like gelatinous substance primarily made up of collagenous and elastic fibers. Areolar connective tissue can be found in the skin as well as in places that connect epithelium to other tissues. The areolar tissue is found beneath the dermis layer and is also underneath the epithelial tissue of all the organ systems that have external openings. It is a component of mucus membranes found in the digestive, respiratory, reproductive, and urinary systems, and surrounds the blood vessels and nerves. * Adipose tissue. Adipose tissue contains adipocytes (fat cells). Its main role is to store energy in the form of fat, although it also is used for cushioning, thermal insulation, and lubrication (primarily in the pericardium. * Dense connective tissue. Dense connective tissue (or, less commonly, fibrous connective tissue) has collagen fibers as its main matrix element. Crowded between the collagen fibers are rows of fibroblasts, fiber-forming cells, that manufacture the fibers. Dense connective tissue forms strong, rope-like structures such as tendons and ligaments. Tendons attach skeletal muscles to bones; ligaments connect bones to bones at joints. Ligaments are more stretchy and contain more elastic fibers than tendons. Dense connective tissue also make up the lower layers of the skin (dermis), where it is arranged in sheets. * Reticular connective tissue. Reticular connective tissue is a network of reticular fibers (fine collagen, type III) that form a soft skeleton to support the lymphoid organs (lymph nodes, bone marrow, thymus, and spleen.) Reticular fibers are synthesized by special fibroblasts called reticular cells. The fibers are thin branching structures. Adipose tissue is held together by reticular fibers. Reticular connective tissue resembles areolar connective tissue, but the only fibers in its matrix are reticular fibers. Although reticular fibers are widely distributed in the body, reticular tissue is limited to certain sites.
2016-05-21 23:30:14
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answer #3
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answered by Anonymous
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