Pectoral Girdles -
- Each pectoral girdle consists of two bones: 1 clavicle and 1 scapula.
- The scapula is a large triangular flat bone situated in the dorsal part of the thorax between the second and seventh ribs.
- The dorsal, flat, triangular body of the scapula has a slightly elevated ridge called the spine which projects as a flat, expanded process called the acromion.
- The clavicle articulates with the acromion.
- Below the acromion is a depression called the glenoid cavity which articulates with the head of the humerus to form the shoulder joint.
- Each clavicle is a long slender bone with two curvatures.
- This bone is commonly called the collarbone.
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Each clavicle is a long slender bone with two curvatures. This bone is commonly called the collarbone. Hence, the correct option is c. clavicle
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