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': 'First rib is not related to ? \nSelect and explain. \nA. Sympathetic chain, B. Scalenus anterior, C. Suprapleural membrane, D. T2 Nerve', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., T2 NerveAnteriorly, the neck of the first rib is related to (from medial to lateral) :- (1) Sympathetic chain, (ii) Ist posterior intercostal vein, (iii) Supeior intercostal aery, and (iv) 1st thoracic nerve. These structures are between neck of first rib (posteriorly) and apex of lung (anteriorly).Following are attached to first rib :- Scalenus anterior, scalenus medius, subclavius, serratus anterior ( lst digitation), costo-clavicular ligament and suprapleural membrane.", 'role': 'assistant'}]