Neuron+-+HH

=Introduction= toc You quickly pull back your hand after touching it to boiling water. Why? Neurons are cells that make you feel things. Neurons have a few unique parts that help them function. When you touch something a nerve impulse travels through the millions of neurons you have in your body to your brain. The three different types of neurons all send info to the brain but they send different kinds of information. One of the diseases neurons can get is called ALS and it makes you paralyzed over time. =Whats a **Neuron?**= Neurons are cells that live in your body. They are nicknamed nerve cells. They are what make you feel stuff. Neurons carry info to your brain and your brain makes a decision to do something. For example if you put your hand in boiling water neurons will send that pain signal to your brain and your brain will tell you to pull our hand away. The message neurons carry are called nerve impulses. There are estimated to be about 100 billion neurons in everyone's body. =Different Parts of a Neuron= There are lots of different parts to a neuron. As you can see the neuron is long with a circle at one end of it and sticking out of the circle are stick shaped things called dendrites. Dendrites are the part of the neuron that receives info and gives it to the cell body. In the middle of the big circle called the soma is a little circle called the nucleus. The nucleus is the part of the neuron that carries genetic info. The long body part of the neuron is called an axon. The axon sends info to other neurons. Covering the axon is a myelin sheath. A myelin sheath covers the axon and protects it. At the end of the neuron, are axon terminal buttons. axon terminal buttons send neurotransmitters to other neurons. =How a Nerve Impulse Travels= A nerve impulse travels through the axon. For the nerve impulse to get to another neuron the must be linked. This is called a synapse. When the nerve impulse travels across one neuron and and to the synapse it releases neurotransmitters. Neurotransmitters carry the nerve impulse across the synapse and to another neuron. =The Three Types of Neurons= There are three different types of neurons. Excitatory neurons, inhibitory neurons, and modulating neuron. =ALS And How it Effects Neurons= =**Conclusion**= Neurons are important cells in your body. Without them you would be paralyzed. Each part of the neuron works differently to get the nerve impulse to your brain. All three of the neurons send information to the brain but they all send different kinds of information. There are diseases your neurons can get. One of them is called ALS and it is very harmful to you and your neurons. If you didn't have your neurons you wouldn't be able to swallow your food, play with friends, or even know if it is warm or cool outside. = References =

Dowshen, Steven, ed. “Lou Gehrig’s Disease.” Kidshealth. nemours, 2015. Web. 22 Jan. 2015. .

“How Does Your Brain Respond to Pain.” Ted Ed. N.p., n.d. Web. 23 Jan. 2015. .

Introducing the Cell Cochran, 1997. Full Video.Discovery Education. Web. 19 December 2014. .

Neuron. Tamuk. N.p., n.d. Web. 19 Dec. 2014.

neurons. N.p., 2014. Web. 18 Dec. 2014. . Padilla, Michael J. Prentice Hall Science Explorer. Teacher’s ed. Needham: Pearson Prentice Hall,, 2005. Print.