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
Closure of Neural Tube begins at which of the following levels? 
Select and explain. 
A. Cephalic end, B. Caudal end, C. Cervical Region, D. Thoracic Region
C: Cervical Region
Answer: C: Cervical Region 
Explanation: Neural tube closure stas at 23rd day of embryo and is completed by 27th day. It begins in the future cervical region and continues caudally and cranially. Ref: Basic Clinical Neuroscience, 2nd Edition, Page 299; Color Atlas of Neuroscience: Neuroanatomy and Neurophysiology, Germany, Page 58