This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal Injuries, Subject name: Orthopaedics
[{'content': 'What constitutes a spinal motion segment? \nSelect and explain. \nA. A disc and the facet joints at that level., B. A disc and the vertebrae above and below, including their interlocking facet joints., C. A section of the spine involved in a physiological curve with the similar function (i.e. thoracic kyphosis)., D. A vertebral body and the disc above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. A disc and the vertebrae above and below, including their interlocking facet joints.A spinal motion segment is made up of a disc with its adjacent vertebrae and their interlocking facet joints devoid of musculature', 'role': 'assistant'}]