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Highlighted Area: Femoral Nerve

Axillary Artery Axillary Vein Cranial and Lateral Caudal and Medial

Sternocleidomastoid Middle scalene Anterior scalene Internal jugular Brachial plexus

Cords Divisions Trunks Roots Lateral Cord Posterior Cord Medial Cord C5 C6 C7 C8 T1 Dorsal scapular nerve Suprascapular nerve Nerve to subclavius Lateral pectoral nerve Musculocutaneous nerve Axillary nerve Median nerve Ulnar nerve Medial cutaneous nerve of the forearm Medial cutaneous nerve of the arm Radial nerve Lower subscapular nerve Thoracodorsal nerve Medial pectoral nerve Upper subscapular nerve Long thoracic nerve https://upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Brachial_plexus_2.svg/750px-Brachial_plexus_2.svg.png

Musculocutaneous Nerve White Arrows: Needle

Circled: Musculocutaneous Nerve

Musculocutaneous Nerve

Musculocutaneous Nerve Biceps Muscle Corachobrachialis Muscle Triceps Muscle

Highlighted Area: Musculocutaneous Nerve

Highlighted Area: Fascia between the pectoralis major muscle and pectoralis minor muscle

Axillary Artery Axillary Vein Pectoralis Major Muscle Pectoralis Minor Muscle

Third Rib Fourth Rib Pectoralis Major Muscle Pectoralis Minor Muscle Serratus Anterior Muscle

Highlighted Area: Fascia between the serratus anterior muscle and the pectoralis minor muscle (needle target)