This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'Common carotid aery divides at the level of \nSelect and explain. \nA. Hyoid bone, B. Cricoid cailage, C. Superior border of thyroid cailage, D. Inferior border of thyroid cailage', 'role': 'user'}, {'content': 'Answer: C \nExplanation: At the level of the upper border of the thyroid cailage, the aery ends by dividing into the external and internal carotid aeries. The right common carotid aery is a branch of the brachiocephalic aery. the left common carotid aery is branch of the arch of the aoa. Ref.BDC volume 3 sixth edition pg no: 99', 'role': 'assistant'}]