system
A chat on 4chan
human
Soul
associated with 3.
fertilized egg attaches.
Navel, straight line to spine, dense bundle of neurons, celiac ganglia (mass ganglion).
Pattern of synaptic firing from neuron to neuron creates the electro-magnetic field called Sense.
The fluctuating patterns of sense give rise to soul which can connect to other.
These fluctuating patterns are often called emotion or feel.
The quality of Soul is defined by how subtle the development of emotion.

Spirit
associated with 9.
located 90 degrees from the navel celiac ganglia line
a dense bundle of neurons that develops oppositely of the celiac ganglia
Pattern of synaptic firing of neuron to neuron creates the electro-magnetic field called Mind.
The fluctuating patterns of mind give rise to Spirit which can connect to other.
These fluctuating patterns are called thoughts or imaginings.
The quality of Spirit is defined by how subtle the development of thoughts.

Body
associated with 6. (666, body body body = beast based existence)
provides the connection between Soul and Spirit, Spine.
provides the connection to the External environment and Soul & Spirit, Nerve Pathways.

From this framework a practical understanding and usage from old descriptions of kundalini, enlightenment, etc. can be gained.
gpt
oops, forgot to mention for Spirit...
dense bundle of nerves called Brain...