Filroblasts - fibrocytes/ histiocytes-macrophages/ mast cells/ myofibroblasts/ melanocytes/ leukocytes/ plasma cells/ pericytes/ fat cells

Glycosaminoglycans glycoproteins proteoglycans

Colagen reticular elastic

Most common cell type in connective tissue

Colagen reticular elastic

Glycosaminoglycans glycoproteins

Young and active

Old - rest

Smaller than the active fibroblasts/ spindle shape/ fewer processes/ darker/ elongated nucleus/ acidophilic cytoplasm/ small amount of RER

Round and oval

Basophilic granules in cytoplasm

Heparin/ histamine/ ECF-A/ NCF-A/ leukotrienes/ prostaglandin/ thromboxane/ platelet - activating factor

Anticoagulent

Increases capillary permeability

Eosinophil chemotactic factor

Neutrophil chemotactic factor

Irregular shape/ nucleus oval eccentric kidney shape/ granular lysosomes/ pseudopodia

Ingestion by phagocytosis/ participate in the breakdown of aged cells including erythrocytes

Particulate matter such as dust/ microorganisms bacteria viruses fungi parasites

Derive from B lymphocytes/ eccentric nucleus/ dark staining cytoplasm/ lots of RER/ don't leave the connective tissue/ produce antibodies

Are associated with small blood vessels/ as contractile cells/ probably as pluripotential cells

Lymphocytes granulocytes monocytes

B lymphocytes T lymphocytes natural killers ( NK )

Neutrophils eosinophils basophils

Monocytes = macrophages = histiocytes

Part fibroblastic part muscle - like cells/ having a contractile apparatus similar to the smooth muscle cells/ injury repair after wounding

Pigment cells found in the connective tissues the skin and the eye/ melanin produced by these cells is known to absorb ultraviolet light

Mesenchymal cell → lipoblast → white cell and brown cell

One big fat droplet

Many small fat droplets

Stroma - support/ protection/ transport/ defense/ storage