Give detailed notes on the main topic "Introduction to neurological disorder (CVA, UMNL, LMNL)" based on the following topic learning outcomes: 1. Discuss the anatomy of vascular supply to brain 2. Explain the types of stroke, predisposing factors and causes 3. Discuss the clinical presentation and complication of CVA 4. Outline the management of CVA 5. Discuss the clinical approach to UMNL and LMNL. Use the following references: Davidson's principles and Practice of Medicine 24th Edition, Kumar and Clark Clinical Medicine 10th Edition, MacLeod's Clinical Examination 15th Edition, Harrison's principles of internal medicine 21st Edition, Nicholas J Talley O' Conner Clinical Examination 9th Edition, Malaysia Ministry of Heath Websites, and Malaysian Clinical Practice Guidelines.