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Cartilage Structure & Composition - Coggle Diagram
Cartilage Structure & Composition
Extracellular Matrix
Fibrillar (proteins)
Collagen
70% of dry weight
Type II collagen most prevalent
AC 90-95% type II collagen
Strength of steel
Located in ECM
Little resistance to compression
Very strong in tension
Elastin
No triple helix like collagen
Rubber-like elastic fibers
Uncoils when stretched, then recoils
Makes up smaller proportion of fibrous components
Interfibrillar (ground substance)
Proteoglycans (PG's)
The number and types of GAGs attached determines function
Whole structure is a PG, the feathers are the GAGs
Negatively charged (attracts water)
Large swelling pressure, occupies larger space & spreads out
Pushes against collagen, collagen pushes back
Water and dissolved electrolytes