The correct answer is B) Brain.
It sounds impossible, right? The very organ that processes every single pain signal in your entire body cannot actually feel pain itself.
So if the brain has zero pain receptors, why do we get such terrible headaches?
The pain isn't coming from your brain tissue. It comes from the structures surrounding it. The protective layers covering the brain (the meninges), your scalp, neck muscles and the complex network of blood vessels are absolutely packed with pain receptors. When these structures get inflamed, stretched or stressed, they send frantic pain signals TO the brain, which you experience as a headache.
This unique lack of pain receptors inside the brain tissue is exactly why neurosurgeons can perform open brain surgeries while the patient is completely awake, talking or even playing a musical instrument!
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