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': 'True about vertebral artery -a) Enter skull through condylar canal.b) Branch of internal carotid arteryc) Branch of subclavian arteryd) Accompany sympathetic ganglione) Passes through foramen transversarium of cervical vertebrae \nSelect and explain. \nA. abd, B. acd, C. cde, D. ade', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vertebral artery enters skull (posterior cranial fossa) through foramen magnum.\nVertebral artery is a branch of subclavian artery.\nIt is accompanied by sympathetic peri-arterial plexus, inferior cervical (stellate) sympathetic ganglion and ventral rami of 7th and 8th cervical spinal nerves.\nVertebral artery passes through foramina transversaria of upper six cervical vertebrae.', 'role': 'assistant'}]