Using Pfluger's laws, explain how pathological muscle tension can spread through the body

What will be an ideal response?

A complete response should include these concepts:
• Law of symmetry—Tension and pain tends to occur in the same area on the opposite side of the body from the primary injury.
• This is because nerve roots that supply each side of the body exit and enter the spinal cord between the same vertebrae. If the spinal cord segment is hypersensitive, it can overreact and stimulate reflexes that will cause tension on both sides of the body.
• Law of radiation—Tension and pain tends to spread upward along the spinal cord.
• As the upper torso moves and bends, the lower sections stabilize and support the movement. If the lower sections become painful, the next higher section is tensed to help stabilize the painful lower section.
• Law of generalization—tension may become generalized throughout the body and can radiate all the way up along the spinal cord.
• The lower brain centers may then react by sending a sort of general spinal reflex that affects the whole body.