home office information staff patient education treatment options new technology spine focus contact us	Spine Anatomy & Glossary A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z neoplasia - Refers to abnormal cells which are frequently due to tumors or cancer. nucleus - The inner portion of the intervertebral disc.