In humans There are normally thirty-three -LRB- NUMBER@1 -RRB- vertebrae in humans , including the five that are fused to form the sacrum -LRB- the others are separated by intervertebral discs -RRB- and the four coccygeal bones which form the tailbone .

There are normally thirty-three -LRB- NUMBER@1 -RRB- vertebrae in humans , including the five that are fused to form the sacrum -LRB- the others are separated by intervertebral discs -RRB- and the four coccygeal bones which form the tailbone .
