(i) Areolar tissue :
The areolar tissue is also known as loose connective tissue. It is most widely distributed connective tissue in the animal body. It consists of a transparent, jelly-like sticky matrix containing numerous fibres and cells and abundant mucin. The fibres are mostly of two types :
(a) White collagen fibres. They are made up of a protein called collage, which on boiling with water changes to gelatin, and
(b) yellow elastic fibres. They are formed of a protein called elastic. Collagen fibres provide flexibility and strength whereas elastic fibres provide elasticity.
The areolar tissue is connective in function. It fixes the skin with the muscles, fills the spaces inside the organs, Attaches the blood vessels and nerves with the surrounding tissues, fastens the periotneum to the body wall and viscera. It is commonly called "Packaging tissue" of the body. Examples, bone periosteum, muscle perimysium, nerve perineurium, etc.
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