The anterior humeral circumflex artery runs horizontally, beneath the coracobrachialis and short head of the biceps brachii muscle, in front of the neck of the humerus. On reaching the intertubercular sulcus, it gives off a branch which ascends in the sulcus to supply the head of the humerus and the shoulder-joint.

Where does the anterior circumflex humeral artery supply?

Supply. The anterior circumflex humeral artery provides part of the blood supply to the glenohumeral joint, teres major and minor, and deltoid muscles. The ascending branch provides supply to the head of the humerus 1.

What nerve runs with the posterior circumflex humeral artery?

The axillary nerve leaves the axilla winding round the surgical neck of the humerus, passing below the shoulder joint. It is accompanied by the posterior circumflex humeral branch of the axillary artery (see Fig. 2.21).

What does anterior and posterior circumflex humeral artery supply?

It winds around the surgical neck of the humerus and is distributed to the deltoid muscle and shoulder-joint, anastomosing with the anterior humeral circumflex and deep artery of the arm. It supplies the teres major, teres minor, deltoid, and (long head only) triceps muscles.

What artery supplies the head of the humerus?

Background: The current consensus in the literature is that the anterolateral branch of the anterior humeral circumflex artery provides the main blood supply to the humeral head.

What is circumflex artery?

The circumflex artery branches off the left coronary artery and encircles the heart muscle. This artery supplies blood to the lateral side and back of the heart.

What does the circumflex scapular artery supply?

The circumflex scapular artery is the largest terminal branch of the subscapular artery. … They contribute to the blood supply of three muscles (deltoid, teres minor, triceps brachii), glenohumeral joint and two small cutaneous areas partially overlying the scapula.

What does the brachial artery supply?

The brachial artery and its branches supply the biceps brachii muscle, triceps brachii muscle, and coracobrachialis muscle. The median nerve, a division of the brachial plexus, initially lies lateral to the brachial artery at its proximal segment.

What does the Suprascapular artery supply?

The suprascapular artery supplies the supra- and infraspinatus muscles and travels with the suprascapular nerve. It is a direct branch from the subclavian artery (12%), the thyrocervical trunk (27%) or the internal thoracic artery (11%).

What does lateral thoracic artery supply?

The lateral thoracic artery supplies the axillary lymph nodes, serratus anterior, pectoralis major, pectoralis minor and subscapularis muscles. … Additionally, it can provide blood supply to the breast in females.

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What does the axillary nerve supply?

Axillary nerve (ventral rami of C5 & C6) arises from the posterior cord of brachial plexus giving muscular branches to teres minor & deltoid. It also supplies the shoulder joint and the skin over it [1].

What travels around the surgical neck of the humerus?

Origin. The posterior circumflex humeral artery arises medially from the axillary artery at the proximal part of the arm. It arises specifically from the third part of the axillary artery. It then immediately travels posteriorly and circles the surgical neck of the humerus via the quadrangular space 1.

What artery supplies the axillary nerve?

Axillary arterySourcesubclavian arteryBranchesSuperior thoracic Thoracoacromial Lateral thoracic Subscapular Anterior circumflex humeral Posterior circumflex humeral continues as brachial arteryVeinaxillary veinSuppliesaxilla

What is the blood supply of humerus?

The primary blood supply of the proximal humerus comes from anastomoses between the anterior and posterior circumflex humeral arteries. [15] These are branches of the distal third of the axillary artery.

Which artery supplies the head of femur?

The majority of the blood supply to the head of the femur comes from the medial and lateral circumflex branches of the profunda femoris, which itself is a branch of the femoral artery (the profunda femoris is the deep penetrating branch of the upper thigh).

What is scapular anastomosis?

The scapular anastomosis is a system connecting certain subclavian artery and their corresponding axillary artery, forming a circulatory anastomosis around the scapula. It allows blood to flow past the joint in case of occlusion, damage, or pinching of the following scapular arteries: Transverse cervical artery.

What does the Thoracodorsal artery supply?

The thoracodorsal artery supplies predominantly the latissimus dorsi muscle but also gives branches to the serratus anterior muscle, the axillary skin, the subscapular and teres major muscles.

Where does the circumflex scapular artery originate?

The vertical branch of the superficial circumflex scapular artery originates at the level of the triangular space. It descends parallel to the lateral border of the latissimus dorsi muscle, approximately 6–8 cm medially.

What does the anterior interventricular artery supply?

Function. The artery supplies the anterolateral myocardium, apex, and interventricular septum. The LAD typically supplies 45-55% of the left ventricle (LV) and is therefore considered the most critical vessel in terms of myocardial blood supply.

What is the role and pathway of the circumflex artery?

The circumflex branch of the left coronary artery primarily supplies the left ventricle. In the left-sided dominant coronary circulation, it gives off the posterior interventricular branch to supply the diaphragmatic surface of the myocardium.

What does circumflex mean in medical terms?

Circumflex: Curved like a bow. In anatomy, circumflex describes a structure that bends around like a bow. For example, the circumflex branch of the left coronary artery. … From the Latin circumflexus, bent around, circumflex, past participle of circumflectere, to bend around : circum- + flectere, to bend.

What does superior thoracic artery supply?

The main function of this artery is to provide blood supply for the pectoralis major, pectoralis minor, subclavius and serratus anterior muscles. … Additionally, it supplies the muscles and adjacent skin of the first two intercostal spaces.

What artery is above collar bone?

The suprascapular artery is a branch of the thyrocervical trunk, which emerges from the first part of the subclavian artery. It runs across the front of your neck and behind the clavicle (collarbone) to supply blood to the muscles, skin, and bones in your chest and shoulder.

What arteries supply the infraspinatus?

The infraspinatus is supplied arterially by the suprascapular and circumflex scapular arteries. The suprascapular artery either originates from the thyrocervical trunk or the subclavian artery.

Which artery is the main supply of triceps?

The arterial supply to the triceps is provided by the deep brachial artery, which is a branch of the brachial artery and is supplied by ulnar collateral arteries.

Why is the brachial artery important?

The brachial artery is the most important source of blood to the arm and hand and is an essential component of the circulatory system. It connects the lower margin of the Teres major tendon in the shoulder to the elbow.

What does the femoral artery supply?

The femoral artery is a continuation of the external iliac artery and constitutes the major blood supply to the lower limb. … The femoral artery and its branches supply most of the thigh as well as the entirety of the leg and foot.

What does superior epigastric artery supply?

The superior epigastric artery is a terminal branch of the internal thoracic artery that contributes to the blood supply of the anterior abdominal wall. … Along its course, it gives several collateral branches that supply the muscles and the skin of the anterior abdominal wall.

Where is superior thoracic artery?

The superior thoracic artery (highest thoracic artery) is a small artery located near the armpit in humans. It normally arises from the first division of the axillary artery, but may arise from the thoracoacromial artery, itself a branch of the second division of the axillary artery.

Where does lateral thoracic artery come from?

The lateral thoracic artery, which also arises from the second part of the axillary artery, follows the lateral border of the pectoralis minor muscle and supplies the lateral part of the pectoralis major muscle.

Why is axillary nerve called circumflex?

The axillary nerve or the circumflex nerve is a nerve of the human body, that originates from the brachial plexus (upper trunk, posterior division, posterior cord) at the level of the axilla (armpit) and carries nerve fibers from C5 and C6.