Radial Nerve in Arm and Nerves of Posterior Shoulder, N465 Notes, Anatomy, Upper Limb, Neurovasculature

1. Dorsal scapular Nerve (Root C5)
1. Levator Scapulae
2. Rhomboid Minor Muscle
3. Rhomboid Major Muscle
2. Suprascapular Nerve (Root C5, C6)
1. Supraspinatus Muscle
2. Infraspinatus muscle
3. ? Articular Innervation of Glenoheumaral Joint
3. Lower Subscapular nerve
1. Subscapularis Muscle
2. Teres Major Muscle 
4. Axillary Nerve (Root C5, C6) - (middle trunk, posterior division, posterior cord)
1. Muscle
1. Deltoid Muscle
2. Teres Minor Muscle
3. Long Head of the Triceps Brachii
2. Sensory
1. Shoulder Joint
2. Superior Lateral Cutaneous Nerve
5. Radial Nerve (Roots C5,C6, C7, C8, T1) - Terminal Branch of the Posterior Cord of the Brachial Plexus
1. Course
1. Through the Triangular Space of the axilla
2. Triceps Brachii
1. After giving off branches to the long and medial heads of the triceps brachii, it enters a groove on the humerus, the radial sulcus, where it innervates the lateral head of the triceps.
3. Pierces the Lateral Intermuscular Septum and enters the anterior compartment of the arm
2. Motor
1. Muscular Branches
1. Triceps Brachii
2. Aconeous
3. Brachioradialis
4. Extensor Carpi Radialis Longus
2. Deep Branch of radial nerve
1. Extensor Carpi Radialis Brevis
2. Supinator
3. Posterior Interosseous Nerve
1. Extensor digitorum
2. Extensor digiti minimi
3. Extensor Carpi Ulnaris
4. Abductor Pollicis Longus
5. Extensor pollicis Brevis
6. Extensor Pollicis longus
7. Extensor Indicis
3. Cutaneous Nerves
1. Inferior Lateral Brachial Cutaneous Nerve
2. Posterior Brachial Cutaneous Nerve
3. Posterior Antebrachial Cutaneous Nerve
4. Superficial Branch Radial Nerve

Radial Nerve in Arm and Nerves of Posterior Shoulder, N465 Notes, Anatomy, Upper Limb, Neurovasculature