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1. 2. CNS & PNS The neuron has a cell body, the neuron also have structures called dendrites and axons. Dendrites are short extensions of cell that receives information from the other cells. This information is carried away from the cell body by the axons. Often times the axons branch off and the tip of each branch is called the axon terminal. Poster Brain: Cerebrum- Voluntary movements, sense touch, light, sound, smell, taste, pain, hot & cold Cerebellum- Coordinating voluntary movements such as skeletal movements. Spinal Chord- Impulses to and from the brain (CNS) Functions cont… Nerves- Detect changes in environment (inside & outside of the body), sends information (muscles and glands), integrates Neurons: Cell Body- Makes neurotransmitters, keeps cell alive Dendrites- Receives messages from other cells Axon- Carries messages away to other cells Passage of Impulse Working w/ Other Systems You need the nervous system to survive; the system works with all other systems in the body Muscular System- Reacts to messages from the nervous system (contracts muscles) Skeletal System- Reacts/Sends messages from/to the nervous system (breaking a bone) Cardiovascular System- An involuntary change by nervous system (speeds up/ slows heart rate) Respiratory System- An involuntary change by nervous system (regulates breathing) Sciatic Nerve Some long axons are 1m long Bibliography Holt California Life Science (7th. Grade, Science) Claire’s Dad (bio/anatomy teacher) For fun facts http://answers.yahoo.com/question/index?qid=20090 413152349AAPltcY