The breastbone, also known as the sternum, is positioned at the center of the chest. It is a flat bone that forms the front part of the ribcage, providing protection to vital organs like the heart and lungs. Connected to the ribs through cartilage, the breastbone offers support and stability to the chest. It serves as an attachment site for various muscles involved in respiration and upper body movements. Furthermore, the breastbone contributes to the overall shape and structure of the chest, aiding in the formation of the ribcage.

英語での「breastbone」の定義と意味

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