How many pairs of spinal nerves are found in a human?

Options

A. 8
B. 12
C. 25
D. 31

Explanation

To determine how many pairs of spinal nerves are found in a human, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Spinal Nerves**: Spinal nerves are essential components of the nervous system that connect the spinal cord to various parts of the body. They are responsible for transmitting motor, sensory, and autonomic signals.

2. **Identifying the Number of Pairs**: In humans, spinal nerves are categorized into pairs. Each pair corresponds to a segment of the spinal cord.

3. **Counting the Pairs**: The human spinal cord has a total of 31 pairs of spinal nerves. These are divided into different regions:
- 8 pairs of cervical nerves (C1 to C8)
- 12 pairs of thoracic nerves (T1 to T12)
- 5 pairs of lumbar nerves (L1 to L5)
- 5 pairs of sacral nerves (S1 to S5)
- 1 pair of coccygeal nerves (Co1)

4. **Conclusion**: Therefore, the total number of pairs of spinal nerves in a human is 31.

### Final Answer:
**31 pairs of spinal nerves are found in a human.**

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