Your nerves make every function of your body possible. They transmit all sensation to and from the brain and make it possible to see, smell, taste and hear. Your nerves also maintain your balance and keep your body at 98.6 degrees. They also control your blood pressure, stomach action, blood flow, speech, and breathing. Nerves also make it possible to swallow and even make your bowels move.
I'll bet you never thought that your nerves regulated and controlled such a large part of your body. Your circulatory system, digestive system, respiratory system, muscular system, reproductive system, glandular system, lymphatic system and eliminative system, all function by your nerves.