The 2010 MLB trade deadline is fast approaching, and though some big deals have already been swung, rumors of several other deals remain as deadline enthusiasm nears a fever pitch. Here, SB Nation's Jeff Sullivan answers some trade deadline FAQ to get the less familiar reader up to speed on just what's going on.
After spongy bone is formed in the diaphysis, osteoclasts break down the newly formed bone to open up the medullary cavity. The cartilage in the epiphyses continues to grow so the developing bone increases in length. Later, usually after birth, secondary ossification centers form in the epiphyses.
Spongy bone is lighter and less dense than Compact bone. It consists of plates and bars of bone adjacent to small, irregular cavities that contain red bone marrow. Compact bon â¦ e consists of closely packed osteons or Haversian systems.t is lighter than compact bone.    Compact bone is generally on the outer edges of bone. it is  composed of multiple osteon units that are bunched closely together  like stacked logs and, thus, is good at bearing weight in the long  direction. Spongy bone is generally on the inside of compact bone.