Plural for vertebra. Bony segments forming the human spinal column.
Cervical vertebrae (C1-C7): 7
Thoracic vertebrae (T1-T12): 12
Lumbar vertebrae (L1-L5): 5
Sacral vertebrae (S1-S5): 5
Coccygeal vertebrae: 3-5
IT IS THE SMALL BONES THAT FORM THE SPINAL CORD