Wow. That is so cool. I was just sure I could move my ring fingers too, but I couldn't. This concept was new to me, too, and I really enjoyed learning about it.
Now, how can I work that into a book.............?
The explanantion is for romantics only as the vein of this hand is a very small one and will merge into larger ones to go to the veina cava (the main vein of the body) which leads to the heart... So any finger would do!