Mrs. Dalia Kamal Eldien MSC in Microbiology

 There are two main sub-classes of connective tissue :- 1) Connective tissue proper 2) Specialized connective tissue. Classification of connective tissue

 Connective tissue proper is subdivided further into  Loose (or sometimes referred to as areolar)  Dense: this is subdivided to o Regular o Irregular Connective tissue proper

 Specialized connective tissue is further subdivided into :  Adipose connective tissue  Reticular connective tissue  Elastic connective tissue  Cartilage Supportive connective tissue  Bone  Blood Fluid connective tissue  lymph Classification of connective tissue

1.Loose connective tissue  is characterized by small interwoven collagen fibers embedded in more ground substance than in dense connective tissue.  Fewer and smaller collagen fibers compared with dense  The fibroblast is the main cell that produces and maintains the ground substance and collagen fibers. Connective tissue proper

Loose connective tissue

Fibers: 1)Collagen 2) Elastic 3)Reticular Ground substances: 1)Flexible 2) Well vascularized 3)Not very resistant to stress. Loose connective tissue

2.Dense connective tissue 1)It has the same components found in loose connective tissue, but there are fewer cells& more fibers 2)Dense connective tissue is less flexible and more resistant to stress than loose connective tissue. Connective tissue proper

2.Dense connective tissue Regular Irregular

1.collagen fibers are arranged in bundles 2.collagen fibers form a 3-dimensional network providing resistance to stress from all directions. Dense irregular connective tissue

Dense regular connective tissue

Reticular connective tissue

Reticular tissue

Adipose tissue

 adipose tissue represents 15–20% of the body weight in men of normal weight  in women of normal weight, 20–25% of body weight. Adipose tissue

Elastic tissue

What kind of tissue does this represent? Loose (areolar) connective tissue

What kind of tissue does this represent? Where in the body can you find this tissue? Adipose tissue fat

What kind of tissue does this represent? Where in the body can you find this tissue? Dense connective tissue tendons; ligaments