In multiple sclerosis, the protective coating on nerve fibers (myelin) is damaged and may eventually be destroyed. Depending on where the nerve damage occurs, MS can affect vision, sensation, coordination, movement, and bladder and bowel control. Multiple sclerosis (MS) is a potentially disabling disease of the brain and spinal cord (central nervous system). In MS, the immune system attacks the protective sheath (myelin) that covers nerve fibers and causes communication problems between your brain and the rest of your body. Eventually, the disease can cause the nerves themselves to deteriorate or become permanently damaged.
NEXT PAGENEXT. Internal combustion means just what it says: that fuel is burned inside the engine. In a car engine, gasoline is burned inside the engine, which ignites the fuel and releases energy that moves the car. There are also other methods of internal combustion, such as diesel engines and gas turbine engines. Internal combustion is an efficient system that requires a relatively small engine to create motion.
Fun Facts about Internal Combustion Engines for Kids. 1  Cars have more than just one piston and valve. 2  A cannon is a very simple type of combustion engine. 3  As air moves into the engine, it goes through an air filter that gets rid of dirt and dust. 4  A spark plug lights the gas on fire so it moves the pistons.