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': 'Bounderies of anatomical snuff box are all except \nSelect and explain. \nA. APL, B. EPL, C. EPB, D. ECU', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., ECU Anatomical Snuffbox Triangular depression on the dorsal and radial aspect of the hand become visible when thumb is fully extended. Boundaries Medial/Posterior - Tendon of the extensor pollicis longus. Lateral/Anterior - Tendon of the extensor pollicis brevis and abductor pollicis longus. Roof Skin and - fascia with beginning of cephalic vein and crossed by superficial branch of the radial nerve. Floor - Styloid process of radius, trapezium, scaphoid and base of 1st metacarpal. Contents - The radial aery.", 'role': 'assistant'}]