This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Veebral aeries of both sides unite to form 
Select and explain. 
A. Anterior spinal aery, B. Posterior spinal aery, C. Medullary aery, D. Basilar aery
D: Basilar aery
Answer: D: Basilar aery 
Explanation: Veebral aery curves round the ventrolateral aspect of the medulla obolongata between the root of hypoglossal nerve unite with its fellow at lower border of pons to form median basilar aery Bd chaurasias Human anatomy Volume 3 Sixth edition