As well as old leases, you should keep anything that documents the landlord-tenant relationship or supports the items you report on your tax return. If the IRS audits your tax return and you cannot produce the correct verification documents, you may be liable for additional tax and penalties.
The facet joints link the vertebrae together and give them the flexibility to move against each other. The facets are the bony knobs that meet between each vertebra. There are two facet joints between each pair of vertebrae, one on each side.
Introduction to Spinal Rotation. Rotation is a basic spinal movement in which you turn the spine around itself (called turning around the axis, with the axis being the spine.) When you twist your spine, it also bends to the side as a secondary part of that action. This is due to the way the vertebra fit together.