CONNECTIVE TISSUE PROPER

AREOLAR TISSUE

*It contains air in its space, hence it is called areolar connective tissue or spongy tissue.
*it contains following types of cells having specific function-

1. Mast cell-it is small spherical cell scattered in matrix..

                         it secretes following types of chemical-

     (A) Heparin-natural anticoagulant.

     (B) Histamin- vasodialator, Antiallergic

     (C) Serotonin-vasoconstricter  

     2. Histiocytes cell-it is phagocytic cell, it engulfs disease causing.

    

    3.Plasma cell-it is small spherical cell,which secretes antibodies.

    4. Fibroblast cells- these cells forms animal fibrous tissue. it is divided into two groups-

             (A)white fibrous/collagen/inelastic tissue- unbranched collagen protein. 

 

             (B)yellow fibrous/ elastic tissue-thin and branched and made up of elastin protein

FIBROUS TISSUE

* these connective tissue contains fibroblast cells and animal's fibre

*fibrous connective tissue classified into two groups-

1. White fibrous connective tissue-it is made up of white fibre, e.g.- tendon.
2. Yellow fibrous connective tissue- it is made up of yellow fibre. e.g.- ligament

ADIPOSE TISSUE

* it contains fat and fat forming cells.

*it is further classified into two groups-

      White adipose tissue

      Brown adipose tissue.

*in children, brown adipose tissue is present in excess amount , hence children less suffer from cold.

*brown adipose tissue contain excess amount of mitochondria and very less amount of ATPs.

*as age increases, brown adipose changes into white adipose tissue.

*Blubber- it is thick pad of adipose tissue found in blue whale.

*Hump-it is found in camel and ox, it is accumulation of adipose tissue.

RETICULAR CONNECTIVE TISSUE

*it is thin thread like structure of reticulin protein.

*reticulin protein is generally store in lymphatic tissue. e.g. lymph, vermiform appendix, spleen.