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 debutante or deb (from the French debutante, dÃ©butante female) beginner is a girl or young lady from an aristocratic or upper class family who has reached the age of maturity, and as a new, adult is introduced to society at a formal debut. presentationriginally, it meant the young woman was eligible to marry, and part of the purpose was to display her to eligible bachelors and their families with a view to marriage within a select upper class circle. Debutantes may be recommended by a distinguished committee or sponsored by an established member of elite society.