Loose connective tissue has cells and fibres loosely arranged in a semi-fluid ground substance, for example, areolar tissue present beneath the skin. Often it serves as a support framework for epithelium. It contains fibroblasts (cells that produce and secrete fibres), macrophages and mast cells.
Adipose tissue is another type of loose connective tissue located mainly beneath the skin. The cells of this tissue are specialized to store fats. The excess of nutrients which are not used immediately are converted into fats and are stored in this tissue.