Which vertebra is the anticlinal vertebra in the canine?

Which vertebra is the anticlinal vertebra in the canine?

• A. T9
• B. T13
• C. T11
• D. T14

Answer: (C)

The main concept here is that the anticlinal vertebra is the thoracic vertebra with the longest dorsal spinous process, marking the point where the direction of the spines changes along the spine. In dogs, this peak occurs around the eleventh thoracic vertebra, which is why it’s used as a key landmark on physical examination and radiographs. The eleventh thoracic vertebra typically has the longest dorsal spine, while those above and below have progressively shorter spines, so they don’t serve as the anticlinal landmark. Therefore, the eleventh thoracic vertebra is the best answer.

The main concept here is that the anticlinal vertebra is the thoracic vertebra with the longest dorsal spinous process, marking the point where the direction of the spines changes along the spine. In dogs, this peak occurs around the eleventh thoracic vertebra, which is why it’s used as a key landmark on physical examination and radiographs. The eleventh thoracic vertebra typically has the longest dorsal spine, while those above and below have progressively shorter spines, so they don’t serve as the anticlinal landmark. Therefore, the eleventh thoracic vertebra is the best answer.