The finger joints work like hinges and let the fingers bend and straighten. [11] In this article, we will look at all the parts of the arm, along with their names, functions, and locations, using simple diagrams. Arm Anatomy Diagram An illustrated diagram of human arm anatomy highlighting bones, muscles, joints, and their functions.. 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. The distal part of the upper arm between the elbow and the radiocarpal joint (wrist joint) is known as the forearm or "lower" arm, and the extremity beyond the wrist is the hand. By.
Explore upper limb muscles including the shoulder, arm, forearm and hand. Learn origins, insertions, actions and innervations with clear clinical context.. The upper extremity or arm is a functional unit of the upper body. It consists of three sections: the upper arm, forearm, and hand. It extends from the shoulder joint to the fingers and contains 30 bones. It also consists of many nerves, blood vessels (arteries and veins), and muscles. The nerves of the arm are supplied by one of the two major nerve plexus of the human body, the brachial plexus.