Skin Appendages
- Sweat glands develop as epidermal downgrowths and help excrete substances and regulate body temperature.
- Sebaceous glands develop near hair follicles and release sebum into the follicles.
- Sebum lubricates hair and skin and limits drying.
- Hair develops from epidermal downgrowths and provides protection and assists temperature regulation.
- Nails develop as epidermal thickenings and protect the sensitive ends of the digits.
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