I'm not expert by any means, I just read A LOT... and if I recall correctly, I believe there are 3 bones in the neck which are responsible for sending pain messages to the brain... and again, if I recall correctly the bones name's are C3, C4, and C5. I'm trying to do this without using Google lol
That executioner knows what he's doing... Those Mexican Cartels REALLY know what they're doing... You guys recall the video where they killed like 4-5 kids? They chopped and hacked away at the back of the neck first! Then there's that ONE beheading that will stay with me for as long as I'm alive... The one where he gets beheaded but they leave his spine intact only to tap away at it later with the blade.....

Done.
Bones that send pain messages to the brain? I´m sure there´s no anatomy book in existence with such advanced anatomical knowledge!