A vertebra is a bone of the spine, they have nothing directly to do with a state of unconsciousness.
"Unconsciousness" is a noun. It refers to the state of being unaware or not conscious.
NARCOSIS
comatose
No. Coma means total unconsciousness.
sleep
It means: comma (as in punctuation) OR a coma as in a state of unconsciousness.
Not conscious; unaware
coma
A coma is a deep state of unconsciousness, your brain is at its lowest activity level.
You cannot create a state of unconsciousness in a person. Its impossible!
It is a temporary state of unconsciousness brought on by a controlled dose of a barbiturate drug