Nervous System.

The Nervous System is the bodys information gatherer, storage center and mince constitution. Its overall function is to collect information about the foreign conditions in relation to the bodys internal state, to analyze this information, and to initiate book responses to satisfy certain needs.

Neurons.

The carrels that make up the nervous system are

called neurons. Long, stringy neurons are perfect for

carrying the electrical messages that are the speech communication

of the nervous system.

Brain.

The drumhead is the command center of your entire body. The brain is the bodys main information center. It is made of billions of neurons. The brain helps the body do to the information it receives from the senses. The brain also processes thoughts.

Spinal Cord.

The spinal cord is a tube of neurons that runs up the spine and attaches to the brain stem. Information from jitteriness that branch out to the rest of the body goes to the spinal cord. close to messages are processed by the spinal cord still most information is sent on to the brain.

A Neuron consists of one-third MAIN PARTS:

A. CELL BODY - The largest part, contains the nucleus and practically of the cytoplasm (area between the nucleus and the cell membrane), most of the metabolous activity of the cell,

B.



DENDRITES - Short branch extensions spreading out from the cell body. Dendrites Receive STIMULUS (Action Potentials) and carry IMPULSES from the ENVIRONMENT or from other NEURONS AND CARRY THEM TOWARD THE CELL BODY.

C. axon - A Long character that CARRIES IMPULSES AWAY FROM THE CELL BODY. Each neuron has only unmatched AXON. The Axon Ends in a series of small swellings called AXON TERMINALS.

The CENTRAL NERVOUS SYSTEM serves as the CONTROL circle around of the body. The Central Nervous System consists of the BRAIN and SPINAL...

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