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Connective Tissue Cells
N/A
10
Anatomy
Undergraduate 3
01/18/2011

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Term
Connective tissue
Definition
cells separated by a matrix of loosely or densely packed intercellular material. The matrix consists of fibers and of loose or dense ground substance
Term
fibroblasts
Definition
Fixed cell

most abundant, large, star-shaped, produce fibers
Term
fixed macrophages
Definition
fixed cell

irregularly shaped and utilized to engulf invaders and damaged cells
Term
adipocytes
Definition
fixed cell

fat cells, number varies btw types of connective tissues
Term
mesenchymal cells
Definition
fixed cell

stem cells, respond to local injury or infection by dividing to produce new cells
Term
melanocytes
Definition
fixed cell

produce melanin (a dark brown pigment) common in epithelial tissue but also found in connective tissue, give tissue a dark color and differ in number in individuals
Term
free macrophages
Definition
wandering cell

like fixed macrophages but are free to circulate throughout connective tissues. When within the blood are called MONOCYTES
Term
mast cells
Definition
wandering cell

small, mobile cells found near blood vessels, secrete histamine and heparin to stimulate local inflammation in response to injury/infection
Term
lymphocytes
Definition
wandering cell

migrate throughout body and increase in number where tissue damage occurs, can develop into plasma cells which produce antibodies
Term
microphages (neutrophils and eosinophils)
Definition
wandering cell

migrate throughout body and respond to chemicals released by macrophages and mast cells. these cells are also phagocytic
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