Abductor pollicis longus muscle Abductor pollicis longus muscle In human anatomy, the abductor pollicis longus (APL) is one of the extrinsic muscles of the hand. As the name implies, its major function is to abduct the thumb at the wrist. Its tendon forms the anterior border of the anatomical snuffbox. The abductor pollicis longus lies immediately below the supinator and is sometimes united with it. It arises from the lateral part of the dorsal surface of the body of the ulna below the insertion of the anconeus, from the interosseous membrane, and from the middle third of the dorsal surface of the body of
Anatomical fugitive sheet Anatomical fugitive sheet Anatomical fugitive sheets are illustrations of the human body specially created to display internal organs and structures. Hinged flaps enable the viewer to see a body as if in various stages of dissection. They appeared for the first time in the 16th century and became popular as instructional aids. The parts were labelled, making it easier for lay students to understand the workings of the human body. The earliest known examples of these sheets were published in Strasbourg by the engraver and printer Heinrich Vogtherr in 1538, and probably existed in great numbers although very few have