In this tutorial, we will learn the neuroanatomy of the brachial plexus. Key structures: cervical rami, long thoracic nerve, dorsal scapular nerve, upper trunk, middle trunk, lower trunk, posterior division, anterior division, suprascapular nerve, lateral cord, posterior cord, medial cord, upper subscapular nerve, thoracodorsal nerve, lower subscapular nerve, medial pectoral nerve, medial brachial cutaneous nerve, medial antebrachial cutaneous nerve, lateral pectoral nerve, musculocutaneous, nerve, axillary nerve, radial nerve, median nerve, ulnar nerve, serratus anterior, rhomboid muscles, supraspinatus muscle, infraspinatus muscle, latissimus dorsi, clavicular head of pectoralis major, sternal head of pectoralis major, deltoid muscle, biceps brachii.