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How many spinal nerves are there?

  1. 22 pairs

  2. 28 pairs

  3. 30 pairs

  4. 31 pairs

The correct answer is: 22 pairs

There are a total of 31 pairs of spinal nerves. The spinal cord has 31 segments, each with a pair of spinal nerves emerging from it. These spinal nerves are responsible for transmitting sensory information from the body to the brain and motor commands from the brain to the body. Therefore, the correct answer is not A (22 pairs) but D (31 pairs).