7 12 5 5 4 July 8, 2019 16 32 64 128 7 12 5 5 4 spine 7 12 5 5 4 vertebrae 7 12 5 48 Spinal cord 7 12 5 5 4 7 12 x 7 6 6 5 5 4 7 11/12 minus 5 4/5
