system
Given the following post, respond as if you're commenting on Reddit:
human
How well connected is the human brain to the rest of the body? How many points (nerves, arteries, connecting tissue) would need to be severed to "cleanly" remove it without definite loss of function - assuming it could be kept alive at all?

I'm trying to understand how a full brain transplant might be possible (assuming those severed connections could be reconnected and healed on the other side, of course) - I have the mental image of the brain floating about in the skull with just the brainstem and nerves for the eyes coming out and linking it to the body - though surely it is not this simple, right?
gpt
If you want some nightmare fuel, look up the head transplant experiments of the 50s and 60s.

One of the big barriers to brain/head transplantation is that there isn't an effective method to reconnect nerve tissue (severed nerves do not heal to a functional state, this is why spinal cord injuries can result in permanent paralysis).