1. a light glass formed on the surface of some lavas; used as an abrasive. Familiarity information: PUMICE used as a noun is very rare. â¢ PUMICE (verb) The verb PUMICE has 1 sense: 1. rub with pumice, in order to clean or to smoothen. Familiarity information: PUMICE used as a verb is very rare.
ECM of articular cartilage. -collagen (Type II) that is dispersed throughout ground substance and produces strong tensile resistance to stress-Proteoglycans (aggrecans) that form strong, permeable fiber and attracts lots of water-water and dissolved electrolytes.one 1-superficial zone where fibers are parallel to surface Zone 2-middle zone where fibers are randomly oriented Zone 3-Deep zone of cartilage where fibers are vertically oriented.
Form and function of articular cartilage. Articular cartilage lies at the end of bones at the joint. It is very smooth (its coefficient of friction is less than one-third of ice on ice) highly compressible and resilient. Articular cartilage derives its powers from its very organized and efficiently constructed microanatomy. At the base, horizontal fibers are firmly adherent to the subchondral bone. Above that layer, large, negatively charged macromolecules attract and bind water.