Shoulder & Scapular Nerves
This cranial nerve innervates the trapezius and sternocleidomastoid.
What is the spinal accessory nerve (CN XI)?
This nerve innervates the subscapularis only.
What is the upper subscapular nerve?
This nerve innervates the serratus anterior and prevents “winged scapula.”
What is the long thoracic nerve?
These five initial components of the plexus originate from spinal nerves C5–T1.
What are the roots?
This nerve innervates the biceps brachii and coracobrachialis.
What is the musculocutaneous nerve?
This nerve innervates the deltoid and teres minor.
What is the axillary nerve?
This nerve innervates the teres major and subscapularis.
What is the lower subscapular nerve?
This posterior cord branch also supplies the latissimus dorsi.
What is the thoracodorsal nerve?
Roots combine to form these three structures: upper, middle, and lower.
What are the trunks?
This major posterior branch innervates the triceps brachii.
What is the radial nerve?
This nerve innervates the rhomboids and levator scapulae.
What is the dorsal scapular nerve?
This nerve arises from the lateral cord and innervates pectoralis major.
What is the lateral pectoral nerve?
This nerve runs with the suprascapular artery through the suprascapular notch.
What is the suprascapular nerve?
Each trunk splits into an anterior and posterior of these.
What are divisions?
This nerve runs along the medial arm and innervates most intrinsic hand muscles.
What is the ulnar nerve?
This nerve supplies the supraspinatus and infraspinatus muscles.
What is the suprascapular nerve?
This nerve arises from the medial cord and innervates both pectoralis major and minor.
What is the medial pectoral nerve?
This nerve from roots C5 helps elevate the scapula via the levator scapulae.
What is the dorsal scapular nerve?
Divisions regroup into these three named structures: lateral, posterior, and medial.
What are the cords?
This nerve arises from both medial and lateral cords and innervates most forearm flexors.
What is the median nerve?
This nerve supplies the latissimus dorsi.
What is the thoracodorsal nerve?
This small nerve stabilizes the clavicle at the sternoclavicular joint.
What is the nerve to subclavius?
Though tiny, this nerve assists in depressing the clavicle.
What is the nerve to subclavius?
These are the terminal components of the brachial plexus that supply the limb.
What are the branches?
This terminal branch travels through the quadrangular space.
What is the axillary nerve?