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The pectoral girdle consists of the two bones that make up your shoulder:
clavicle, or collarbone
scapula, or shoulder blade
Your pectoral girdles are responsible for providing structural support to your shoulder region on the left and right side of your body. They also allow for a large range of motion, connecting muscles necessary for shoulder and arm movement.
The pectoral girdles on either side of your body aren’t joined together. This allows for your shoulder and arms to move and function independently.
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