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 theatre theatre; in Leiden, 17th-century depictions show that the living observers were actually accompanied in the rows by a large number of animal and human skeletons, some of which held banners with inscriptions such as "Memento mori", or, freely translated, "Remember, you will die". The first anatomical theatre was built at the University of Padua in 1594 and is still preserved. Other early examples include the Theatrum Anatomicum of Leiden University, built in 1596 and reconstructed in 1988, and the Anatomical Theatre of the Archiginnasio in Bologna (whose building dates from 1563 and the anatomical theatre from 1637). The anatomical theatre