"Thoraxorgane" (https://youtu.be/28bcnkOxwGc) by Prof. Hilke Vorwerk (https://www.youtube.com/channel/UCpBHT7vSwpHdOQdVJ2IYdGA) can be reused under the CC BY-SA license (https://creativecommons.org/licenses/by-sa/4.0/).
Originalfile "Human body diagrams" (https://commons.wikimedia.org/wiki/File:Surface_projections_of_the_organs_of_the_trunk.png).