Arthrology a Intervertebral discs a Fibrocartilaginous joint a Increase in size from c to L a Ratio remains the same a Make up 20-30% of length of columnArthrology ◼ Intervertebral Discs ◼ Fibrocartilaginous joint ◼ Increase in size from C to L ◼ Ratio remains the same ◼ Make up 20-30% of length of column