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  • Smart Learning for All

  • Topic: Nerves.

  • Why don't we feel pain when we cut our hair?

  • Because if it would, then we would have got angry on our hair dressers.

  • You are just impossible.

  • Wait.

  • I will explain it to you.

  • Inside our body, there is a network of nerves.

  • These nerves help us to sense our surroundings and feel pain, touch, etc. by sending messages to the brain.

  • So, do the nerves of my hair not know how to send a message?

  • No.

  • Generally, the part of our hair above the skin is made up of dead cells.

  • It does not have any nerves.

  • Hence, when we cut our hair, due to the absence of nerves, our brain does not receive any messages of pain.

  • As a result, we don't feel any pain.

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神經系統 - 為什麼我們剪頭髮時不覺得痛?| 頭髮是什麼? (Nervous System - Why dont we feel pain when we cut our hair? | #aumsum)

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    AumSum posted on 2021/01/14
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