This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Last to recover in spinal anaesthesia 
Select and explain. 
A. Pain, B. Motor, C. Proprioception, D. Preganglionic sympathetic
D: Preganglionic sympathetic
Answer: D: Preganglionic sympathetic 
Explanation: .It may be that preganglionic sympathetic fibers are more resistant to local anesthetic block than previously thought. Anesthesiologists often assume that, when a motor block is present during spinal or epidural anesthesia, sympathetic nerve transmission is blocked. Ref Robbins 9/e pg 346