Human brain contains__________neurons.
Correct answer: C. 100,000,000,000
- A. 10,000,00
- B. 100,000,000
- C. 100,000,000,000
- D. 1000
Explanation
The human brain contains approximately 86 billion neurons, which is commonly rounded in older exam material to about 100,000,000,000 neurons. This is a count of cells, not a percentage or a number of brain regions. Students may choose 100,000,000 because it is a large number, but it is far below the accepted estimate for total human brain neurons.
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