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.
Merriam-Webster 's definition of revenant is one that returns after death or a long absence.. In that the subject returns from death, one can easily see an association of the term with the undead in fantasy and horror fiction.On the other hand, unlike zombies, the revenant's long absence does imply a certain anachronism in its eventual return. In Peter Straub 's Ghost Story, the female ghost is a revenant as declared by the protagonist. 2  The revenant manifests itself throughout time and space at will and as different personalities to fulfill its mission of vengeance.