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': 'Structures passing deep to flexor retinaculum are all except - \nSelect and explain. \nA. Flexor digitorum superficialis, B. Palmaris longus, C. Flexor digitorum profundus, D. Flexor pollicis longus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Structures superficial to flexor retinaculum\n\n\xa0 \xa0 \xa0 \xa0\xa0Palmaris longus\n\xa0 \xa0 \xa0 \xa0Ulnar vessels and nerve\n\xa0 \xa0 \xa0 \xa0\xa0Palmar cutaneous branches of median and ulnar nerves.\n\n\xa0Structures deep to flexor retinaculum\n\n\xa0 \xa0 \xa0 Median nerve\n\xa0 \xa0 \xa0\xa0Flexor digitorum superficialis\n\xa0 \xa0 \xa0 Flexor digitorum profundus\n\xa0 \xa0 \xa0 Flexor pollicis longus\n\xa0 \xa0 \xa0 Flexor carpi radialis', 'role': 'assistant'}]