Changes

The ''sternum''' separates the two sides of the [[rib cage]].  It is the long flat [[bone]] or [[cartilage]] in the center of the rib cage which connects all of the ribs.<ref>http://encyclopedia2.thefreedictionary.com/Ribcage</ref>

The '''sternum''', also known as the '''breastbone''', separates the two sides of the [[rib cage]].  It is the long flat [[bone]] or [[cartilage]] in the center of the rib cage which connects all of the ribs.<ref>http://encyclopedia2.thefreedictionary.com/Ribcage</ref>

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==References==