Arm muscle anatomy refers to the location and function of the muscles of the arms.
The arm muscles control movement at the elbow, forearm, wrist, and fingers.
When affected by injury or neuromuscular disorders, everyday tasks that require hand and arm use can be challenging.
The arm muscle groups consist of the upper arm and lower arm.
The major muscles of the arm are the four upper arm muscles.
They can be superficial (near the skin) or deep (underlying the superficial group).
The biceps brachii, coracobrachialis, and brachialis all controlflexionat the elbow joint, or bending of the elbow.
The coracobrachialis also controls adduction, a movement that brings the arm closer to the body.
Thebrachioradialis of the lower arm musclesalso contributes to elbow flexion.
The biceps brachii and triceps brachii also contribute to flexion and extension of the shoulder, respectively.
Themuscles of the lower armcontrol wrist, forearm, and finger movement.
The biceps brachii and brachioradialis also help supinate the forearm.
Many neuromuscular disorders are inherited, meaning they run in families.
Injuries are often triggered by overuse.
Seeing a physical therapist can help you return to your daily activities and exercises without limitations.
Each muscle controls a specific movement, such as extension, flexion, pronation, and supination.
This weakness can interfere with your ability to perform daily tasks.
Talk to a healthcare provider if youre experiencingmuscle pain, weakness, or wasting.
The provider can run tests to determine the cause and get you the treatment you need.
The University of Michigan.Muscles of the upper limb - listed alphabetically.
Forro SD, Munjal A, Lowe JB.Anatomy, shoulder and upper limb, arm structure and function.
In: StatPearls.StatPearls Publishing.
