Compact Bone. Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix.Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.ompact Bone. Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix.
LEFTenant is the way British troops pronounce the rank Lieutenant. The two words mean different things within different military groups, but there is no actual difference. A British troop can refer to an American Lieutenant as  leftenant and not be incorrect.
A revenant is a visible ghost or animated corpse that was believed to return from the grave to terrorize the living.The word revenant is derived from the Latin word, reveniens, returning (see also the related French verb revenir, meaning to come back).Vivid stories of revenants arose in Western Europe (especially Great Britain, and were later carried by Anglo-Norman invaders to Ireland) during the High Middle Ages.everal stories state that revenants drink blood. For example, in Historia rerum Anglicarum the corpse of one revenant is reported to have been found in the grave, swollen and suffused with blood. When it was pierced, a stream of blood flew out of the wound.