Connective tissue

type of biological tissue

Connective tissue is a fibrous tissue.[1] It is one of the four traditional classes of tissues (the others being epithelial, muscle, and nervous tissue).

Connective tissue (CT) is found throughout the body. It has 3 main components; cells, fibres, and extracellular matrix.

Connective tissue makes up a variety of physical structures including, tendons, blood, cartilage, bone, adipose tissue, and lymphatic tissue. CT is classified into three subtypes: embryonic CT, proper CT, and special CT.

Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals, making up about 25% of the total protein content.[2]


  1. Connective tissue at Dorland's Medical Dictionary
  2. Di Lullo, G. A. (2002). "Mapping the ligand-binding sites and disease-associated mutations on the most abundant protein in the human, Type I Collagen". Journal of Biological Chemistry. 277 (6): 4223–31. doi:10.1074/jbc.M110709200. PMID 11704682.