Ulnar artery || скачать в хорошем качестве

Ulnar artery ||

Today in this tutorial I have explained Basic Anatomy Of arterial supply of upper limb. Axilla: Axillary Artery The axillary artery lies deep to the pectoralis minor and is enclosed in the axillary sheath (a fibrous layer that covers the artery and the three cords of the brachial plexus). Importantly, the artery can be divided into three parts based on its position relative to the pectoralis minor muscle: First part – proximal to pectoralis minor Second part – posterior to pectoralis minor Third part – distal to pectoralis minor The anterior and posterior circumflex humeral arteries form an anastomotic network around the surgical neck of the humerus and can be damaged in cases of fracture. At the lower border of the teres major muscle, the axillary artery is renamed the brachial artery. Upper Arm: Brachial Artery The brachial artery is a continuation of the axillary artery past the lower border of the teres major. It is the main supply of blood for the arm. Immediately distal to the teres major, the brachial artery gives rise to the profunda brachii (deep artery), which travels with the radial nerve in the radial groove of the humerus and supplies structures in the posterior aspect of the upper arm (e.g. triceps brachii). The profunda brachii terminates by contributing to an anastomotic network around the elbow joint. The brachial artery proper descends down the arm. As it moves through the cubital fossa, underneath the bicipital aponeurosis, the brachial artery terminates by bifurcating into the radial and ulnar arteries. Forearm: Radial and Ulnar Arteries The radial and ulnar arteries are formed by the bifurcation of the brachial artery within the cubital fossa: Radial artery – supplies the posterolateral aspect of the forearm. It contributes to anastomotic networks surrounding the elbow joint and carpal bones. The radial pulse can be palpated in the distal forearm, immediately lateral to the prominent tendon of the flexor carpi radialis muscle. Ulnar artery – supplies the anteromedial aspect of the forearm. It contributes to an anastomotic network surrounding the elbow joint. Also gives rise to the anterior and posterior interosseous arteries, which supply deeper structures in the forearm. These two arteries anastomose in the hand by forming two arches – the superficial palmar arch, and the deep palmar arch.