Welcome to the Quiz Review for Lesson Two.

In Lesson Two, you were asked three questions. Take a few moments to compare your answers to those given here.

1. What is a spinal segment?

A spinal segment includes two vertebrae separated by a disc, the nerves that leave the spinal cord at that level, and the small facet joints that link each level of the spinal column.

2. What is the neutral spine position?

The neutral spine position is a comfortable back posture that is between the extremes of spine flexion and extension. In general, this middle position is a slight inward curve in the small of the back.

3. How do the natural curves of your spine relate to the health of your back?

The natural curves place the spine in a centered position, one that helps avoid extra strain on the parts of the back. The natural curves of the spine position the muscles where they work the best. Good posture and optimal muscle function protect the spine from small amounts of damage that could otherwise add up to back pain and problems.