Image: Descartes-reflex
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Description: Illustration of the pain pathway in René Descartes' Traite de l'homme (Treatise of Man) 1664. The long fiber running from the foot to the cavity in the head is pulled by the heat and releases a fluid that makes the muscles contract.
Title: Descartes-reflex
Credit: Copied from a 345 year old book, Traite de l'homme
Author: René Descartes
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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