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Connective tissue 4

chp 4

Function of connective tissues Binds, supports, protects, fill spaces, store fat, produces blood cells
Location of connective tissues throughout the body
Main characteristics of connective tissue excellent blood supply, cells are farther apart with matrix in between
Loose Connective Tissue (areolar tissue) holds tissue fluids, binds organs together
Dense Connective Tissue binds organs together
Bone supports, protects, provides framework
Adipose Tissue protects, insulate, stores fat
Cartilage (hyaline, elastic, fibrocartilage) support, protects, provides, absorbs chock, framework and attachment
Blood transports substances, helps maintain stable internal environment
Connective tissue proper `tissues with many types of cells and extracellular fluid.
Fluid Connective tissue have distinctive populations of cells suspended in a watery matrix that contains dissolved proteins.
Supporting connective tissues have less cell population and a matrix containing much more densely packed fibers. (cartiledge and bone)
calcified contains mineral deposits like calcium.
Connective tissue proper contains: fibroblasts, macrophages, adipocytes, mesenchymal cells, melanocytes, mast cells, lymphocytes, and microphages.
Fibroblasts secrete hyaluronan (a polysaccharide derivative) and proteins that act as a viscous ground substance.
Macrophages fixed or free, large ameboid cells scattered throughout the matrix that engulf pathogens or damaged cells that enter the tissue.
adipocyte fat cells that contain single enormous lipid droplet.
mesenchymal cells stem cells that respond to local infection or injury by dividing or producing 2 daughter cells.
Melanocytes Produce brown pigment called Melanin.
Mast cells small, mobile connective tissue cells that are common near blood vessels. Contain histamine and heparin to stimulate local inflamation to infection.
Lymphocytes travel throughout the body and develop into plasma cells to produce antibodies
antibodies proteins involved in defending the body against a disease.
Microphages phagocytic cells that move normally through connective tissues in small numbers. Are attracted to chemicals released by mast cells and macrophages after an infection.
Connective tissue fibers collagen, reticular, elastic
collagen fibers most common long, straight, and unbranched. Consists of bundle of fibrous protein subunits like a rope flexible but stronger.
Reticular fibers same subunits as collagen fibers interwoven framework.
parenchyma functional cells
Elastic fibers contain elastin. They are unbranched and wavy.
Elastic ligaments interconnect vertebrae. Are dominated by elastic fibers and are rare.
Ground substance fills the spaces between cells and surround connective tissue fibers.
Embryonic Connective tissues Mesenchyme
Mesenchyme first connective tissue to appear in a developing embryo. Gives rise to other connective tissues. Star shaped stems separated by a matrix with very fine protein filaments.
Loose Connective tissues "packing materials" fill spaces between organs and support epithelia. Include mucuous connective tissue in embryos and areolar tissue, adipose tissue, and reticular in adults.
Areolar Tissue open framework, whose fibers are loosely organized.
adipose tissue fat tissue
white fat name of adipose tissue because of pale, yellow-white color.
Created by: sweetnance