Connective tissue (C.T.) is the tissue characterized by abundant (and important) extracellular material. Connective tissue proper forms the major interstitial material of the body. Two special types are 1) blood and 2) formed C.T. (cartilage and bone).

Connective tissue occurs as the stroma of the mucous membrane, forms a portion of the dermis and subcutaneous tissue, surrounds skeletal muscle fibers, forms portions of the stroma of most organs, surrounds large vessels, and forms mesenteries.

Connective tissue provides loose suspension and support for organs while al-lowing diffusion of H2O soluble components and limits the spread of infection.