Inside the spinal column of a human, there are 24 bones referred to as vertebrae. Between each vertebra bone is a circular-shaped disc. these discs, separated into five distinct sections, rotate or move around as your body moves. If a basketball player jumps and shoots the ball. the discs will turn inside the spinal column. This allows the player to twist in the air. Connecting all these bones and discs is tissue called ligaments. These ligaments are just like an elastic band, stretching and moving as you do. When a person falls lands on the ground very hard, the vertebrae, discs and ligaments absorb the shock so that you don't get hurt. Together, these three parts function as a joint, allowing our body to bend or twist.