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': 'The first rib aiculates with the sternum in close proximity to the? \nSelect and explain. \nA. Nipple, B. Root of the lung, C. Sternal angle, D. Sternoclavicular joint', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The first rib aiculates with the sternum directly below the sternoclavicular joint. The nipple is found in the fouh intercostal space, between the 4th and 5th ribs. The sternal angle is connected to the costal cailage of rib 2. Finally, the xiphoid process is located just below the point where the costal cailage of rib 7 aiculates with the sternum. The root of the lung, or hilum, is the point where the main bronchus, pulmonary vessels, bronchial vessels, lymphatic vessels, and nerves enter and leave the lung. Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 29. Overview of the Upper Limb. In D.A. Moon, K.B. Foreman, K.H. Albeine (Eds), The Big Picture: Gross Anatomy', 'role': 'assistant'}]