| Segments are the building blocks of arthropod bodies, vertebrae the building blocks of backbones. |
| This is a test where a needle is placed through the lower part of the back between the backbones and into the spinal column. |
| Pterosaurs were the first vertebrates, or animals with backbones, to flap their wings and fly. |
| Take a chopper and then break the backbones near the bottom of the cut. |
| When you hear about the third-generation wireless networks, those backbones are going to be packet-based. |
| Let us review the fundamental features of the vertebrate body as context for notochords and backbones. |
