Head's Zones

Hey chaps! How's been life? It's quite hectic over here. Some pretty freaky stuff happened too! But that's not why I'm writing this post.

Browsing through my biology finals topics, medical dictionary and an atlas of human body (all three of these are truly beautiful books!) I came across a term "Head's zones".
These are zones on the human body - skin, to be precise - that are inervated from the same spinal chord segments as particular inner organs. One example of Head's zone would be inner side of left hand ranging from elbow all the way to the pinky, which corresponds to heart.
The result of this intervined innervation is slight connection between impulses from/into these two parts of one's body. That is the reason, why people with angina pectoris/upcoming heart attack feel the pain shooting into their left hand.
I also think, that it is the underlying explanation of acupuncure/massage therapies. While massage would - quite obviously - relax the directly massaged muscles, it's sometimes also said to be helping certain organs. Same goes for acupuncture. I think it's possible that stimulation of sensoric, afferent nerve-paths from the skin can stimulate action in sympatic/parasympatic neural pathways and thus improving/affecting one's insides.

Anyway, that's just a short random piece of knowledge I thought I'd share with you :)

Stay tuned for the occasional bursts,
peace,
out.
Adam