How do you make working model of nervous system?

To create a simple working model of the nervous system, you can use basic materials like paper, scissors, yarn or string, beads, and a straw. This model will demonstrate how the nervous system sends and receives signals.

Here are the steps to make the working model:

1. Create the Neuron Bodies:

- Cut out several small circles from the paper to represent the neuron bodies. These will be the processing units of the model.

2. Make the Axons:

- Cut long pieces of yarn or string to represent the axons. Axons are the long fibers that carry signals away from the neuron bodies.

3. Connect the Neurons:

- Attach one end of each axon to a neuron body. You can use tape or glue to secure them.

- Make sure that each neuron body is connected to at least one axon.

4. Create the Dendrites:

- Cut shorter pieces of yarn or string to represent the dendrites. Dendrites are the short fibers that receive signals from other neurons.

5. Connect the Dendrites:

- Attach one end of each dendrite to a neuron body. Again, use tape or glue to secure them.

- Each neuron body should be connected to at least one dendrite.

6. Simulate the Synapses:

- The synapses are where signals are transmitted between neurons. To represent this, tie a bead to each connection between an axon and a dendrite.

7. Use a Straw as the Spinal Cord:

- Tape the long straw to a surface. This will represent the spinal cord, which carries signals between the brain and the rest of the body.

8. Connect the Neurons to the Straw:

- Attach the axons and dendrites of the neuron bodies to the straw, representing how signals travel to and from the brain.

9. Simulate Signals:

- To demonstrate the transmission of signals, gently tug on an axon. The bead at the synapse should move, representing the transmission of the signal.

10. Observe and Understand:

- The model will demonstrate how signals travel from one neuron to another, simulating a simplified version of the information flow within the nervous system.

Remember, this model is a basic representation and does not capture the full complexity of the nervous system, which involves millions of neurons and intricate connections. However, it provides a visual aid to understand the fundamental concepts of how neurons communicate.