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Arteries of The This document was created by Alex Yartsev ([email protected]); if I have used your data or images and forgot to reference you, please email me. Arteries of the Arm st The AXILLARY ARTERY begins at the border of the 1 rib as a continuation of the subclavian artery Subclavian artery The FIRST PART stretches between the 1st rib and the medial border of pectoralis minor. First rib It has only one branch – the superior thoracic artery Superior thoracic artery The SECOND PART lies under the pectoralis Thoracoacromial artery minor; it has 2 branches: Which pierces the - The Thoracoacromial artery costocoracoid membrane - The Lateral Thoracic artery deep to the clavicular head The THIRD PART stretches from the lateral border of pectoralis major of pectoralis minor to the inferior border of Teres Major; it has 3 branches: Pectoralis major - The Anterior circumflex humeral artery - The Posteror circumflex humeral artery Pectoralis minor - The Subscapular artery Axillary nerve Posterior circumflex humeral artery Lateral Thoracic artery Travels through the quadrangular space together Which follows the lateral with the axillary nerve. It’s the larger of the two. border of pectoralis minor onto the chest wall Anterior circumflex humeral artery Passes laterally deep to the coracobrachialis and Circumflex scapular artery the biceps brachii Teres Major Passes dorsally between subscapularis and teres major to supply the dorsum of the scapula Profunda Brachii- deep artery of the arm Thoracodorsal artery Passes through the lateral triangular space (with Goes to the inferior angle of the scapula, the radial nerve) into the posterior compartment Triceps brachii supplies mainly the latissimus dorsi of the arm. It is the largest branch of the Intermuscular septum Subscapular artery Brachial artery The branch with the greatest diameter but the Biceps brachii shortest length; soon divides into the thoracodorsal BRACHIAL ARTERY and the circumflex scapular arteries Travels from the edge of Teres Major to the cubital fossa, on top of the medial intermuscular septum. Has 3 main branches: Deep artery of the arm Superior ulnar collateral artery Under the bicipital aponeurosis, which accompanies the ulnar nerve down the arm the brachial artery divides into Inferior ulnar collateral artery which arises 5cm proximal to the Radial and Ulnar arteries the elbow crease, and anastomoses with the recurrent branches of the ulnar artery Ulnar Artery Radial Artery Gives some recurrent branches, and then travels down the arm Travels down the arm under under the superficial muscles of the forearm (deep to the pronator the brachioradialis, along teres, palmaris longus, and flexor digitorum superficialis) with the radial nerve. Lies lateral to the flexor carpi Common interosseous artery is very short, because it bifurcates immediately radialis tendon. Gives a recurrent branch. Anterior interosseous artery travels down the arm along the interosseous membrane, and when it reaches pronator quadratus, it pierces the interosseous membrane and becomes dorsal (where it joins the dorsal carpal arch) Posterior interosseous artery travels down the arm along the interosseous membrane, and anastomoses with the anterior interosseous artery when they meet. Flexor carpi radialis tendon Superficial group of forearm flexors Brachioradialis Palmar carpal arch: anastomosis of the palmar carpal branches of the ulnar and radial arteries The Radial Artery winds around Dorsal carpal arch: anastomosis of the dorsal carpal branches of the dorsally, crosses the floor of the ulnar and radial arteries anatomical snuffbox and pierces the 1st dorsal interossei to enter the palm Deep palmar arch: the more proximal arch between the two heads of adductor - A continuation of the radial artery pollicis. Superficial palmar arch: the more distal arch - A continuation of the ulnar artery .
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