Nervous

= //__Nervous System__//  =
 * //By: Lindsay P., Clayton C., Jaelah G., & Jordan N.//**

3. Maintains homeostasis.
__Parts of the Central Nervous System: __
 * __Parts of the nervous system:__ **
 * Brain(CNS)
 * Spinal Cord(CNS)
 * Nerves(PNS)

2. **//Spinal Cord//**
 * 1) **//Brain (boss)~//**
 * It is protected by the skull and cerebral fluid. [[image:http://t1.gstatic.com/images?q=tbn:ANd9GcQ9MoSRHhX8M9VOKgMSIy4sxf4kT7aj67Vmzn0WQV3G5SLCTdRtQg width="85" height="152" align="right"]]
 * Has two sides, the left and right hemispheres
 * If brain cells are destroyed or they die they cannot grow back
 * 4 types of memory are short term, long term, ancestral, and eidetic.
 * It is a bundle of thick nerves that connect the brain to neurons
 * Its protected by the vertebrae
 * Controls reflex (automatic) actions
 * If damaged paralyzed

//Parts of the brain://  __Cerebrum:__
 * Largest area of the brain
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Controls memory~ The 4 types of memory are short term, long term,
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Controls thinking
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Controls 5 senses
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Controls learning

<span style="background-color: #ffffff; color: #0075ff; font-family: 'Comic Sans MS',cursive; font-size: 140%;">__Medulla:__
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Controls involuntary processes
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Ex. Heartbeat, Breathing and Blinking
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Connects to the spinal cord

<span style="font-family: 'Comic Sans MS',cursive; font-size: 140%;">__ Cerebellum __:
 * Controls muscle coordinations.

<span style="color: #6b0eb9; font-family: 'Comic Sans MS',cursive; font-size: 140%;">__Diseases/Problems:__
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">When blood flow in the brain is blocked the result is a stroke and the brain cells die.
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">When a nerve in the spinal cord is damaged it can cause you to be paralyzed.
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">Alzheimers is a disease that is known to be a genetic disease and when you are diagnosed with it, it kills your brain cells.

Ways to keep it healthy:



<span style="color: #00ffec; font-family: 'Comic Sans MS',cursive; font-size: 140%;">**__Peripheral Nervous System__:** //**<span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Nerves **//
 * <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 14px;">Carries messages from the brain to the body by using electrical impulses
 * <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 14px;">2 types of neurons (sensory and motor)
 * <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 14px;">Controls stimulus (cause) and reaction (effect)

<span style="color: #1dcbf7; font-family: 'Comic Sans MS',cursive; font-size: 130%;">Neuron parts:
 * Dendrites[[image:neuron.jpg width="206" height="90" align="right"]]
 * Nucleus
 * Axon
 * Cell body
 * Axon endings

= What action controls which part of the brain? = -breathing= medulla -vision= cerebrum -balance= cerbellum -pain= cerebrum -swimming- cerebellum -heartbeat- medulla -memory- cerebrum

<span style="color: #43eaaf; font-family: 'Comic Sans MS',cursive; font-size: 140%;">Important vocabulary:
 * voluntary actions~ a vouluntary action is when you think about something before you do it. For example raising your hand in class.
 * involuntary actions~ an invouluntary action is when you dont think about doing it your body just knows it has to be done. For example breathing.
 * neuron~ a neuron is a nerve cell which has 5 parts to it such as the nucleus, cell body, dendrites, axon, and axon endings.
 * M.R.I~ an M.R.I is how you take pictures of the brain.
 * skull~ the skull is the hard bone protects the brain.

= Fun Facts!!!!!!!!! =
 * The brain is folded to fit in your skull because your brain is very large.
 * The left side of the brain controls the right side of your body, and the right side of your brain controls the left side of your body.
 * Just one person has 100 billion brain cells!
 * It uses about 25% of the oxygen the body takes in.
 * The brain weighs about 3 pounds

For more information on the nervous system you can go to.......
 * @http://kidshealth.org/parent/general/body_basics/brain_nervous_system.html
 * <span class="wiki_link_ext">http://en.wikipedia.org/wiki/Nervous_system