Def :Category of connective tissue which includes areolar tissue, reticular tissue, and adipose tissue Content :The cells of this type of tissue are generally connected by a gelatinous substance known as ground substance primarily made up of collagenous and elastic fibers. Location :every epithelium rests on a layer of areolar tissue, whose blood vessels provide the epithelium with nutrition, waste removal, and a ready supply of infection-fighting leukocytes when needed Function :connective tissue holds organs in place and attaches epithelial tissue to other underlying tissues. It also serves as a reservoir of water and salts for surrounding tissues. Almost all cells obtain their nutrients from and release their wastes into areolar connective tissue Clinical :Organs that are rich in loose connective tissue (such as the eyelids) are usually sites that undergo oedema , indicating renal failure or nephrotic syndrome. Therefore, periorbital swelling is one characteristic finding in severe renal disease