Question

Match the number of spinal nerves present in the human:
A. Cervical - 12
B. Thoracic - 5
C. Lumbar - 5
D. Sacral - 8

• A. A–5, B–5, C–12, D–5
• B. A–8, B–12, C–5, D–5
• C. A–8, B–5, C–12, D–5
• D. A–12, B–5, C–8, D–5

Hint:

Total spinal nerves in humans = 31 pairs (8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal).

Answer 1

The Correct Option is B

Step 1: Understand spinal nerve distribution.
In humans, spinal nerves are arranged segment-wise according to the vertebral column.

Step 2: Cervical spinal nerves.
There are 8 pairs of cervical spinal nerves (C1–C8).

Step 3: Thoracic spinal nerves.
There are 12 pairs of thoracic spinal nerves (T1–T12).

Step 4: Lumbar spinal nerves.
There are 5 pairs of lumbar spinal nerves (L1–L5).

Step 5: Sacral spinal nerves.
There are 5 pairs of sacral spinal nerves (S1–S5).

Step 6: Final matching.
Thus, A–8, B–12, C–5, D–5 is correct.