
Sternum
Human Anatomy
Use 'sternum' when specifically referring to chest bone anatomy or medical contexts.

During CPR training, we learned the correct hand placement is just above the sternum.
Injury Descriptions
'Sternum' is used to describe injuries related to the chest bone in accidents or sports.

The football player suffered a sternum injury during the game.
Medical Terminology
When reading or writing medical reports, 'sternum' denotes the exact bone being discussed.

The surgeon's report mentioned a small incision just below the sternum.
Compare with
Breastbone
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