it is called the ucuranium
The muscles above the elbow are responsible for bending and straightening the arm.
Muscles within the brachium are responsible for the extension of the elbow. These muscles also work for the flexing of the arm as well.
Triceps, Biceps, Brachialis and Brachioradialis are the main muscles. Link on elbow muscles (anatomy) below will help
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The muscles located in the arm near the elbow are responsible for bending and straightening the arm.
mainly the muscles in your forearm, if you alternate pick fast ( pick up and down fast) you either use your wrist muscles or elbow muscles depending on what moves, your wrist of elbow.
triceps brachii
The bicep flexes the arm at the elbow.
Biceps Brachii
brechioradialis
The primary muscles responsible for movement and stability in the arm from the elbow to the wrist are the flexor and extensor muscles. These muscles allow for bending and straightening of the arm, as well as controlling movements of the wrist and fingers.
Both the tricep and the bicep are muscles which control rotational movement at the elbow. The bicep contracts when the forearm is flexed, and the tricep contracts when the forearm is extended.