Thoracic vertebrae

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thoracic vertebrae The vertebrae of the upper back, which articulate with the ribs. They lie between the cervical vertebrae and the lumbar vertebrae and are distinguished by a number of articulating facets for attachment of the ribs. In humans there are 12 thoracic vertebrae.

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thoracic vertebrae pl. n. the 12 bones of the backbone to which the ribs are attached. See also vertebra.