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 Thoracolumbar fascia except - \nSelect and explain. \nA. Attached to spinous process of lumbar vertebra, B. Attached to transverse process of lumbar vertebra, C. The fascia lies posterior to posterior abdominal wall muscles., D. Gives attachment to Transversus abdominis and internal oblique muscles', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Thoracolumbar fascia\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0Lumbar part extends between the 12th\xa0rib and iliac crest.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0It has 3 layers\n\nAnterior layer\xa0\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\xa0At 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'}]