Question

When you scrape your knee, pain is relayed from your knee to your central nervous system by?

1) Nerves
2) Blood vessels
3) Muscles
4) Bones

Answer 1

The pain from a scraped knee is relayed to the central nervous system by nerves.

Step-by-step explanation:

The pain from a scraped knee is relayed to the central nervous system by nerves.

Nerves are responsible for transmitting signals, including pain signals, from different parts of the body to the brain.