I’ve searched this up and thought about it and all I can think of is a blood vessel in the brain. But that still doesn’t explain why when people have concussions or get head injuries, they feel pain. So what is a headache or where is this pain coming from if there aren’t any pain receptors in the brain. Nervous system? Are there actual pain receptors?
In: Biology
As others have explained much better than I, its not really the brain itself that feels pain but the blood vessels surrounding it. One common cause of headaches, for example, has nothing to do with the head but when the sinuses are inflamed. This causes them to swell and put pressure on the nerves in the skull and neck, similar with a concussion, its the swelling putting pressure on veins and arteries that causes the pain. There’s an excellent TedEd on the subject of headaches that gives an illustrated view of how things work!
Latest Answers