Multiple choice

How many pain receptors are located in the brain itself?

  1. 0

  2. 100,000

  3. 42 million

  4. Around 1 billion
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are zero pain receptors (nociceptors) in the brain tissue itself. While the surrounding membranes and blood vessels have pain receptors, the brain cannot feel pain, which is why neurosurgeons can perform brain surgery on awake patients.

Keep practicing — related questions