This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Wenceslas Hollar Clean shaven head with skin cut away. Clean shaven head with skin cut away cm Portraits Unidentified Or Uncertain Portraits Heads And Caricatures Anatomy after Leonardo da Vinci etc Prints after Leonardo da Vinci Anatomical illustrations by Wenzel Hollar Anatomy of the human head History of anatomy