This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
An anterolateral cordotomy relieving pain in right leg is effective because it interrupts the 
Select and explain. 
A. Left dorsal column, B. Left ventral spinothalmic tract, C. Left lateral spinothalmic tract, D. Right lateral spinothalmic tract
C: Left lateral spinothalmic tract
Answer: C: Left lateral spinothalmic tract 
Explanation: Surgical procedure undeaken to relieve severe pain include cutting the nerve from the site of injury or ventrolateral cordotomy, in which the opposite side spinothalamic tracts are fully cut. Ref: Ganong&;s review of medical physiology;23rd edition; pg:177