Muscular arteries are arteries with smaller lumen containing more smooth muscle and are capable of vasoconstriction and vasodilation. They branch from the elastic arteries and distribute blood to the various regions of the body.
â¢ JASPER (noun). The noun JASPER has 1 sense: 1. an opaque form of quartz; red or yellow or brown or dark green in color; used for ornamentation or as a gemstone. Familiarity information: JASPER used as a noun is very rare. JASPER (noun). The noun JASPER has 1 sense: 1. an opaque form of quartz; red or yellow or brown or dark green in color; used for ornamentation or as a gemstone. Familiarity information: JASPER used as a noun is very rare.
Chapter's Topics. Jasper is the name of dense and opaque varieties of microcrystalline quartz. Jasper is not really a mineral in the strict sense, but a mixture of different types of microcrystalline quartz with impurities of other minerals, and is called a textural variety of quartz.