moving back to medical knowledge, ganglia, and the plexus's illustratrated are nerves right?

well in Hannaman University Medical school (and in the school bookshop/(gift shop) you can see (and purchase an illustration of) the entire human nervious system.

back in the dark ages (ie, when slavery was legal) a doctor carefully discected a former (deceased) slave, and removed ever nerve, and layed them out and preserved the whole thing (as a teaching tool).

for close to 100 years, its a was a difinative 'study' of the complete Human nervous system

Its a bit gross (in UGH! meaning of the word) but its also compelling.

the image might be available on line nowdays... (check out Hannaman University Medical school pages.) if you want something more detailed and isolated than the image from grey anatomy.