Question

Number of cervical spinal nerves in man is

• A. 7 pairs
• B. 8 pairs
• C. 10 pairs
• D. 12 pairs

Hint:

Remember: 8 Cervical 12 Thoracic 5 Lumbar 5 Sacral 1 Coccygeal Total = 31 pairs

Answer 1

The Correct Option is B

Concept:
Human spinal nerves arise from the spinal cord. There are 31 pairs of spinal nerves, classified according to vertebral regions. 

Step 1: Recall the distribution of spinal nerves. \[ \begin{array}{|c|c|} \hline \text{Region} & \text{Pairs} \\ \hline \text{Cervical} & 8 \\ \hline \text{Thoracic} & 12 \\ \hline \text{Lumbar} & 5 \\ \hline \text{Sacral} & 5 \\ \hline \text{Coccygeal} & 1 \\ \hline \end{array} \] 

Step 2: Calculate total spinal nerves.
\[ 8 + 12 + 5 + 5 + 1 = 31 \] Thus, total spinal nerves are 31 pairs. 

Step 3: Identify cervical spinal nerves.
\[ \boxed{8 \text{ pairs}} \] 

Step 4: Choose the answer.
\[ \boxed{\text{Option (B)}} \]