Well here's the thing, the stuff that controls your essential functions such as breathing and heartbeat are in the cervical spine.. which is in your neck for those of you thinking "Cervical? Cervix? I ain't got no vagina!" You know who you are, don't deny it.
I think the saying is C-3,4,5 keep the body alive.
I use 'C-3,4,5, keep phrenic alive!'
Phrenic being the nerve :P