Nerves From the Neck to the Arm (Brachial Plexus)
The brachial plexus is the nerve network from C5 to T1 that runs from the neck, under the collarbone and through the armpit to supply the arm.
Anatomy
How the neck, shoulder, shoulder blade and upper back are built, and how they work together.
Anatomy of the Upper Back and Shoulder Blade
The shoulder blade glides on the ribs, held by muscles from the neck and spine. How the thoracic spine, rib joints and scapular muscles work together.
Anatomy of the Shoulder: Joints, Rotator Cuff and Capsule
The shoulder is four joints working together, steadied by the rotator cuff, capsule and labrum. How each part moves and which problems start where.
Anatomy of the Neck: Bones, Discs, Joints and Nerves
Your neck has 7 vertebrae, 6 discs, paired facet joints and 8 pairs of nerves that serve the shoulder and arm. How each part links to common neck pain.
How the Neck, Shoulder and Upper Back Work Together
Your neck, shoulder blade, upper back and shoulder share muscles, nerves and movement, so pain often shows up away from where it starts.