1 Compact bone: the heaviest, hardest type of bone in the body. 2  Lining cell: flat cells that make up and cover the outer layer of bone. 3  Marrow: a soft tissue found inside bones. 4  Osteoblast: cells make new bone. 5  Osteoclast: cells in your body that break down bone material in order to reshape it.
The changes helped cut the average game length by 12 minutes, from three hours and eight minutes in 2014 to two hours and 56 minutes a year ago - but baseball games were still more than 20 minutes longer than the average NHL game and 40 minutes longer than the average NBA game.
What is the average length of an NBA game? A: In the 2010-2011 season, the average length of an NBA game was 138.1 minutes, or roughly 2 hours and 20 minutes. NBA games consist of four 12-minute quarters with a 15-minute halftime. As with any sport, a number of factors both in and outside of the actual game can affect the game's real-time length. Keep Learning.