Fibers and the classification of connective tissues
2. Elastic fibers-
branch and join together to form a network within tissue, are smaller than collagen
fibers. Elastic fibers consist of molecules of protein elastin surrounded by a glycoprotein
named fibrillin, which adds strength and stability.
-Because of unique molecular structure, elastic fibers are strong but can be stretched
150% of relaxed length without breaking. They have the ability to return to original
shape after being stretched, a property called elasticity
-Elastic fibers are plentiful in skin, blood vessel walls, and lung tissue.
3. Reticular fibers-
consisting of collagen arranged in fine bundles with coating of glycoprotein, provide
support in walls of blood vessels and form network around cells in some tissue such
as areolar connective tissue, adipose tissue, and smooth muscle tissue.
-produced by fibroblast, reticul