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 Anatomical theatre An anatomical theatre (Latin: "Theatrum Anatomicum") was an institution used in teaching anatomy at early modern universities. The theatre was usually a room of roughly amphitheatrical shape, in the centre of which would stand the table on which the dissections of human or animal bodies took place. Around this table were several circular, elliptic or octagonal tiers with railings, where students or other observers could stand and get a good view of the dissection almost from above and unencumbered by the spectators in the rows in front. It was common to display skeletons at some place in the