Question

4. To recall facts learnt about the nervous system​

Answer 1

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Explanation: The body has billions of nerve cells .

Every person's body contains billions of nerve cells (neurons). There are about 100 billion in the brain and 13.5 million in the spinal cord. The body's neurons take up and send out electric and chemical signals (electrochemical energy) to other neurons.

• There are more nerve cells in the human brain than there are stars in the Milky Way.

• If we lined up all the neurons in our body it would be around 965 km long.

• There are 100 billion neurons in your brain alone.

• A newborn baby's brain almost triples in size during the course of its first year.

Answer 2

Answer:

The nervous system not only works to produce thoughts, emotions, and behavior, but also controls important body functions, like breathing. Studying the nervous system advances understanding of our basic biology and body function.

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