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 veebral aery ? \nSelect and explain. \nA. A branch of thyrocervical trunk, B. Enters skull through foramen magnum, C. Unite to form posterior cerebral aery, D. A small aery', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Enters skull through foramen magnum Veebral aery It is the largest branch of subclan aery. Veebral aery traverses through veebral triangle, foramina transversaria of upper six cervical veebrae, suboccipital triangle, posterior atlanto-occipital membrane, veebral canal, pierce duramater and arachnoid (Subarachnoid) and passes through foramen magnum to enter posterior cranial fossa. It gives following branches:- Cervical branches :- Spinal branches, muscular branches (to suboccipital muscle). Cranial branches :- Posterior inferior cerebellar aery, medullary aery, meningeal branches, anterior spinal aery, posterior spinal aery and both veebral aeries unite to form basilar aery.", 'role': 'assistant'}]