We do not sense any pain when we clip our nails or cut our hair. Why?

Explanation

**Step-by-Step Solution:**

1. **Understanding Hair and Nails Composition**: Hair and nails are primarily made up of a protein called keratin. They are composed of dead cells, which means that the majority of their structure does not contain living tissue.

2. **Role of Living Cells**: The only part of hair and nails that contains living cells is the base. This is where the growth occurs, and it is also the part that is sensitive to pain due to the presence of nerve endings.

3. **Nerve Supply**: Since hair and nails are mostly made up of dead tissue, they lack a nerve supply in their outer parts. Nerves are responsible for transmitting pain signals to the brain.

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