# Wet Response (DD-525)

> Fingers and toes wrinkle after soaking because the autonomic nervous system constricts blood vessels under the skin, reducing volume and pulling the skin into folds; it does not happen if the finger's nerves are cut. Some studies suggest the pattern improves grip on wet objects. The footage, credited to photoowlsocial, shows a fingertip wrinkling in water.

- Department: Science
- First published: 2025-03-26
- Last updated: 2025-03-26
- Permalink: https://detailenjoyer.com/case/wet-response/
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## Quick facts

- **DD-525-F01**: Vasoconstriction. _(Write-up · Exhibit A (Cause))_
- **DD-525-F02**: Autonomic nerves. _(Write-up · Exhibit B (Control))_

## Write-up

Pruney fingers are your nervous system at work. Blood vessels constrict to make the wrinkles.

1. **Cause**: Vasoconstriction.
2. **Control**: Autonomic nerves.
3. **Nerves**: Needed.
4. **Pattern**: Folds.
5. **Benefit**: Possibly grip.

## Reel vs. record

- **Note**: None needed.

## Video: Wet Response: Pruney Fingers Are Your Nervous System at Work

- Duration: 16.1 s · Published: 2025-03-26
- File: https://detailenjoyer.com/assets/videos/DHrPIzbydMz.mp4

### Transcript

[...] in water [...] the autonomic [...] When submerged, [...] effect is caused [...] creating a pattern [...] NOW YOU KNOW!

## Questions & answers

**Q: Controlled by?**  
A: Automatic. _(Source: Write-up · Exhibit A (Cause) · Wikipedia: Wrinkle)_

**Q: What constricts?**  
A: Volume. _(Source: Write-up · Exhibit B (Control) · Wikipedia: Wrinkle)_

**Q: Possible benefit?**  
A: Traction. _(Source: Write-up · Exhibit C (Nerves) · Wikipedia: Wrinkle)_

**Q: Without nerves?**  
A: Evidence. _(Source: Write-up · Exhibit D (Pattern) · Wikipedia: Wrinkle)_

**Q: Where it happens?**  
A: Glabrous skin. _(Source: Write-up · Exhibit E (Benefit) · Wikipedia: Wrinkle)_

## Sources

- [Wikipedia: Wrinkle](https://en.wikipedia.org/wiki/Wrinkle)

## Cite this case file

Easterling, Marcus. "Wet Response." The Detail Department (DetailEnjoyer), case file DD-525, last updated Mar 26, 2025. https://detailenjoyer.com/case/wet-response/