How many sacral vertebrae are typically present in humans?

The typical number of sacral vertebrae in humans is five, which eventually fuse to form a single triangular-shaped bone called the sacrum. This anatomical structure is located at the base of the lumbar vertebrae and connects the spine to the pelvis, playing an essential role in supporting the upper body's weight and distributing it across the pelvis and lower limbs.

Understanding this, the response indicating only one sacral vertebra is not accurate, as humans generally possess five individual sacral vertebrae that undergo fusion over time. In some rare cases, individuals might have an anatomical variation leading to different configurations, but the standard anatomical reference is five fused vertebrae forming the sacrum.