<Li> Both the ground substance and proteins (fibers) create the matrix for CT . Connective tissues are derived from the mesenchyme . </Li> <P> Types of fibers: </P> <Table> <Tr> <Th> Tissue </Th> <Th> Purpose </Th> <Th> Components </Th> <Th> Location </Th> </Tr> <Tr> <Td> Collagenous fibers </Td> <Td> Bind bones and other tissues to each other </Td> <Td> Alpha polypeptide chains </Td> <Td> tendon, ligament, skin, cornea, cartilage, bone, blood vessels, gut, and intervertebral disc . </Td> </Tr> <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> </Table> <Tr> <Th> Tissue </Th> <Th> Purpose </Th> <Th> Components </Th> <Th> Location </Th> </Tr>

The three basic types of protein fibers found in connective tissue are