In human anatomy, the supinator is a broad muscle in the posterior compartment of the forearm, curved around the upper third of the radius. Its function is to supinate the forearm.
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.
Extensor pollicis longus muscle
In human anatomy, the extensor pollicis longus
(EPL) is a skeletal muscle
located dorsally on the forearm. It is much larger than the extensor pollicis brevis, the origin of which it partly covers and acts to stretch the thumb together with this muscle.
Extensor pollicis brevis muscle
In human anatomy, the extensor pollicis brevis
is a skeletal muscle
on the dorsal side of the forearm. It lies on the medial side of, and is closely connected with, the abductor pollicis longus.
Extensor indicis muscle
In human anatomy, the extensor indicis
is a narrow, elongated skeletal muscle
in the deep layer of the dorsal forearm, placed medial to, and parallel with, the extensor pollicis longus. Its tendon goes to the index finger, which it extends.