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1. How complex is the human brain?

Almost unfathomably complex.

2. What does the author say lies underneath one's exterior looks?

Sophisticated machinery.

3. What does the author call self-healing material?

The skin.

4. About how many pounds does a brain weigh?

3.

5. How does the author refer to the brain?

As the mission control center.

6. What is one of the types of cells in the brain?

Neurons.

7. What is another type of brain cell?

Glia.

8. In what number range does the author say the brain cells count?

Hundreds of billions.

(read all 180 Short Answer Questions and Answers)

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