The stunning complexity blows my mind! (pun intended)
Cross-section
Substantia nigra, which is involved in addictive behavior.
Trunk lines: Nerve fibers in the human brain are arranged into bundles
Wiring
*Not actually YOUR brain but verrrrrrrrrrry close. If you are curious click here http://www.scientificamerican.com/slideshow/new-view-of-the-brain-slide-show/#3 to read the interesting details of what you are seeing.
CURIOUS to the MAX 
Very, very interesting! The human body is such a miracle. Btw…..go to you tube and look up Pharrell’s Happy song for puppies and doggies. I think of Freddie when I see it!!
xoxox
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