The Nervous System: The Nervous System Of The Human Body

Ever wonder how the human body works, well there are two main systems to help the human body move , the nervous system is comprised of two subdivisions. The central nervous system is the coordinating system for the body. The peripheral nervous system is a very complex network of nerves that extend across the whole body. Both are vital to the human body and without either life would not exist. The nervous system works together with other systems to send signals to the brain. The central nervous is made up of the brain and the spinal cord.

The nervous system is responsible for all the process the make human life possible. It lets us think, dream, and have a lifetime of memories. It also handles our most basic, involuntary actions and reactions

It is roughly the size of a large grapefruit and kind of looks like a cauliflower. The human brain is probably the most complex organ in the body. It has 100 billion nerve cells, or neurons, and trillions of support cells called glia. If you could remove all 100 billion nerve cells and arrange them in a straight line, they would stretch for a distance of about 600 miles (1000 kilometers.) Of course, you would not be able to see this line since nerve cells are only visible under a microscope. Many scientist think that if you tried to count all of the neurons in the human brain, it would take you more than three thousand

These include the nerves that leaves the brain and the spinal cord and extend to all parts of the body. Part of the job of the peripheral nervous system is to gather information from sensory receptors and relay, or send out, this information to the CNS. The messages are transmitted in the form of electrical signals, or nerve impulses. The central nervous system then interprets the messages it receives and sends out the appropriate responses to the body’s glands, muscles, and