The part of your body between your neck and abdomen that contains your heart and lungs, protected by your ribs.
From Latin 'thorax' and Greek 'thorax' meaning 'breastplate' or 'chest.' The word originally referred to the armor protecting a soldier's chest before it came to describe the actual anatomical chest cavity in medical terminology.
The thorax gets its name from Greek warriors' breastplates because ancient doctors thought the chest cavity was as important to protect as armor—and they were right! Your heart and lungs inside would literally stop working without that rib cage shield.
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