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B
Ribs, sternum and thoracic vertebrae
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C
Ribs, sternum and lumbar vertebrae
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D
Ribs and thoracic vertebrae
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Solution
The correct option is A Ribs, sternum and thoracic vertebrae The correct option is B.
In mammals, like rabbit and humans thoracic vertebrae, ribs and sternum together form the rib cage. In humans, the rib cage, also known as the thoracic cage, is a bony and cartilaginous structure that surrounds the thoracic cavity and supports the pectoral girdle (shoulder girdle), forming a core portion of the human skeleton.