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Transcript
How To Make a Neuron Model 1. Take one pipe cleaner and roll it into a ball. This is will be the cell body. 2. Take another pipe cleaner and attach it to the new "cell body" by pushing it through the ball so there are two halves sticking out. Take the two halves and twist them together into a single extension. This will be the axon. 3. Take other pipe cleaners and push them through the "cell body" on the side opposite the axon. These are dendrites. These can be shorter than your axon and you can twist more pipe cleaners to make more dendrites. 4. Wrap small individual pipe cleaners along the length of the axon. These will represent the myelin sheath. 5. Wrap another pipe cleaner on the end of the axon. This will be the synaptic terminal. Neurons Neurons are cells in your brain that connect to lots of other neurons and send messages around the body through the nervous system. Neurons (also called nerve cells) are electrically excitable cells - with information travelling down the axon by shuffling of ions (charged particles). At synapses (connections with other neurons) chemical transmission is used, with molecules moving between the neurons across the synaptic cleft. A typical neuron consists of 3 parts: Dendrites are lots of branches from the cell body that receive signals from other neurons. The axon is very thin and conducts electrical impulses away from the cell body, towards the axon terminal where the neuron forms synapses with other neurons. In vertebrates, the axon is insulated by a sheath of myelin. Essentially myelin makes the messages travel faster.
