What is the correct distribution of spinal nerve pairs?

The correct distribution of spinal nerve pairs is as follows:

- Cervical: 8 pairs (C1-C8)

- Thoracic: 12 pairs (T1-T12)

- Lumbar: 5 pairs (L1-L5)

- Sacral: 5 pairs (S1-S5)

- Coccygeal: 1 pair (Co1)

Each spinal nerve pair arises from the spinal cord and exits through the intervertebral foramina. The spinal nerves then divide into dorsal and ventral rami, which innervate the skin, muscles, and organs of the body.