This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'All are true about Thoraco-lumbar fascia except- \nSelect and explain. \nA. Attachment to the body of lumbar vertebra, B. Origin to the transversus and internal oblique muscles, C. Lumbar part situated in the interval between the iliac crest and the 12th rib, D. Attachment to the transverse process of lumbar vertebra', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Thoracolumbar fascia\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Lumbar part extends between the 12th rib and iliac crest.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 It has 3 layers\n\nAnterior layer-\n\nAttachment- Anterior surface of the transverse process of lumbar vertebrae\nPosition- anterior to quadratus lumborum\n\nMiddle layer\n\nAttachment- the Transverse process of lumbar vertebrae\nPosition- Posterior to quadratus lumborum but anterior to erector spinae.\n\nPosterior layer\n\nAttachment- the Spinous process of lumbar vertebrae\nPosition- Posterior surface of erector spinae.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 At the lateral margin of erector spinae, posterior and middle layers unite. Further, anterior layer joins at the later margin of quadratus lumborum. Together they form the aponeurotic origin of transversus abdominis. It also acts as the origin for internal oblique muscle.', 'role': 'assistant'}]