The medieval wound man, first appearing in the 15th century, was used by physicians and surgeons to communicate anatomy and how to heal different ailments. The diagrams showed the location of diseases, blood letting points, and anatomical correspondences to zodiac signs. Sources and more info on the Public Domain Review.
Images from Geestelyke Natuurkunde by Johan Jacob Scheuchzer, 1728. Scheuchzer’s tome, whose title translates to “Spiritual Physics”, depicted spiritual phenomena and bible stories along with diagrams of animal biology, geology, astronomy, and other sciences. Source: Embassy of the Free Mind