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The units which make up the nervous system are called nerve cells or neurons. So, neuron is the structural and functional unit of the nervous system. We can now say that nervous system is made of special cells called neurons. Neuron is the largest cell in the body (which looks like an electric wire). Neurons contain the same basic parts as any other animal cell but their structure is specially adapted to be able to carry messages over large distances in the body quickly. The neurons carry messages in the form of electrical signals called electrical impulses or nerve impulses. Now, answer the following questions:

1. State true or false: Neurons are different from nerve cells.

(i) TRUE

(ii) FALSE

2. Neuron is the _____cell in the human body.

(i) Larget

(ii) Smallest

3. Neurons carry the messages ______.

(i) Very slowly

(ii) Very quickly

4. Neurons ____ carry the messages over large distances.

(i) Can

(ii) Can not

5. State true or false: The neurons carry messages in the form of electrical signals called electrical impulses.

(i) TRUE

(ii) FALSE

1 Answer

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1. (ii) FALSE

2. (i) Largest

3. (ii) Very quickley

4. (i) Can

5. (i) TRUE

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