Cartilage or
gristle is a dense clear blue-white substance very firm but less firm than
bone. It is found principally at joints and between bones. The bones of the
embryo are first cartilage and when adult age is reached cartilage is found
covering the bone ends. Cartilage does not contain blood vessels but it I
covered by a membrane, the perichondrium, from which it derives its blood
supply.
There are three main varieties of cartilage which
demonstrate the characteristics of this substance firmness, flexibility and
rigidity.
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