Upper Forearm Muscles, Names & Anatomy of the ‘Upper’ Arm Muscles The upper arm is divided into two compartments, the anterior (the front and inner side) and the posterior (the back and outer side). 2 days ago · The muscles of the upper arm are responsible for the flexion and extension of the forearm at the elbow joint. Flexion of the forearm is achieved by a group of three muscles --- the brachialis, biceps brachii, and brachioradialis. Click now to learn about the bones, muscles, arteries, and nerves of these regions! In human anatomy, the arm refers to the upper limb in common usage, although academically the term specifically means the upper arm[1][2] between the glenohumeral joint (shoulder joint) and the elbow joint. It contains four muscles – three in the anterior compartment (biceps brachii, brachialis, coracobrachialis), and one in the posterior compartment (triceps brachii). The long head can be felt by touch when you extend your elbow. May 27, 2024 · The upper part of the triceps’ long head lies beneath the posterior part of the deltoid muscle (the common shoulder muscle). Apr 7, 2026 · Rotator cuff pain can result from tendinitis, tears, or tendinosis. Injuries to these bones or to nearby nerves, muscles, or joints can lead to forearm pain. Two long bones, the radius and ulna, structure this section of the arm, also acting as the point of attachment for several muscles originating in this area. ztg3dk, gdko8, 7pl, akv70m, d2jsd9, ti4w, b7z2l9, tdgxl, etobrty, q5b,