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Connective tissue (Properties (constituents are mainly extracellular,…
Connective tissue
Properties
constituents are mainly extracellular
physical properties are important
collagen is present
tissues and cells are not polarized
cells are generally free of one another and act independently
provide pathways for blood vessels
structure and functions
physically support the body
e.g.
bone
cartilage
furnish pathways for nerves and blood vessels
are compartment for exchange between capillaries and active cells
provide for immune activities
consists of:
cells
fibroblasts
mesenchymal cells
adipocytes
macrophages
mast cells
leukocytes
fibres
matrix
specialized CT
cartilage
bone
very hard due to matrix dominance
classification
Embryonic
rises from mesenchyme (mucous CT)
mesenchyme tissue
gives rise to almost all CT of the body
with exepction of blood cells!!!!
Mesenchymal Cell (undifferentiated)
fibroblast
mesothelial cell
endothelial cell
chondroblast
chondrocyte
osteoblast
osteocyte
adipocyte
adult
ordinary CT
loose CT
characteristics
cellular
sparse collagen fibers
abundant ground substance
also called areolar tissue
locations
supporting epithelia
lamina propria
surrounds glands
dense CT
irregular
mostly collagen fibers arranged irregularly
provide
strength
resistance to tearing
regular
e.g.
tendon
bundles of collagen fibers arranged parallel to each other
provides maximum strength
fibrocyte
Supporting CT
cartilage
bone
special CT
adipose
stores:
fat
energy
Reticular
lymphatic
blood
hematopoietic