<Tr> <Td> Elastic fibers </Td> <Td> Allow organs like arteries and lungs to recoil </Td> <Td> Elastic microfibril and elastin </Td> <Td> extracellular matrix </Td> </Tr> <Tr> <Td> Reticular fibers </Td> <Td> Form a scaffolding for other cells </Td> <Td> Type III collagen </Td> <Td> liver, bone marrow, and lymphatic organs </Td> </Tr> <P> Connective tissue has a wide variety of functions that depend on the types of cells and the different classes of fibers involved . Loose and dense irregular connective tissue, formed mainly by fibroblasts and collagen fibers, have an important role in providing a medium for oxygen and nutrients to diffuse from capillaries to cells, and carbon dioxide and waste substances to diffuse from cells back into circulation . They also allow organs to resist stretching and tearing forces . Dense regular connective tissue, which forms organized structures, is a major functional component of tendons, ligaments and aponeuroses, and is also found in highly specialized organs such as the cornea . Elastic fibers, made from elastin and fibrillin, also provide resistance to stretch forces . They are found in the walls of large blood vessels and in certain ligaments, particularly in the ligamenta flava . </P> <P> In hematopoietic and lymphatic tissues, reticular fibers made by reticular cells provide the stroma--or structural support--for the parenchyma--or functional part--of the organ . </P>

What is the function of connective tissue in the human body
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