Table of Contents
What artery divides into vertebral axillary?
At the lateral border of the first rib, the subclavian artery turns into the axillary artery, which divides into three parts in relation to the pectoralis minor muscle (Figure 30-19). The first part passes medial to the muscle, at its superior border, and gives off the supreme thoracic branch.
What are the branches of the axillary artery?
It has three branches that are variable in their order: the subscapular trunk, the anterior humeral circumflex artery, and the posterior humeral circumflex artery. The subscapular trunk is typically the largest branch of the axillary artery.
What divides subclavian artery?
On the left side of the body, the subclavian comes directly off the aortic arch, while on the right side it arises from the relatively short brachiocephalic artery when it bifurcates into the subclavian and the right common carotid artery….
| Subclavian artery | |
|---|---|
| Source | aortic arch (left) brachiocephalic (right) |
What does the subclavian artery turn into?
The Cardiovascular System Both subclavian arteries turn laterally to pass between the anterior end of the first rib, and the medial end of the clavicle. As the subclavian artery crosses the first rib, it becomes the axillary artery.
What is ulnar artery?
The ulnar artery is a terminal branch of the brachial artery, arising at the proximal aspect of the forearm. Along with the radial artery, it is one of the main arteries of the forearm.
Which artery interconnects the two vertebral arteries?
Inside the skull, the two vertebral arteries join to form the basilar artery at the base of the pons. The basilar artery is the main blood supply to the brainstem and connects to the Circle of Willis to potentially supply the rest of the brain if there is compromise to one of the carotids.
Is axillary anterior or posterior?
The axillary apex is the interval between the superior border of the scapula, the posterior border of the clavicle, and the external border of the first rib. The pectoralis major and the latissimus dorsi form the major anterior and posterior folds, respectively, of the axilla.
What is the first part of axillary artery?
superior
The superior (highest) thoracic artery is the first branch of the axillary artery. It is given off proximal to the outer border of the anterior scalene muscle. It forms part of the arterial supply to the pectoral muscles.
Where does subclavian become axillary?
first rib
As the subclavian artery crosses the lateral border of the first rib, it becomes the axillary artery. On the right side the subclavian artery arises from the brachiocephalic (innominate) artery behind the right sternoclavicular articulation; on the left side it springs from the arch of the aorta.
What is the function of the axillary artery?
In human anatomy, the axillary artery is a large blood vessel that conveys oxygenated blood to the lateral aspect of the thorax, the axilla (armpit) and the upper limb.
What does ulnar artery do?
The ulnar artery supplies the periarticular anastomoses of the elbow via the anterior and posterior ulnar recurrent arteries. It also supplies the medial and central forearm muscles, the median and ulnar nerves, and the common flexor sheath 1.
Where is my ulnar artery?
The ulnar artery, the larger of the two terminal branches of the brachial, begins a little below the bend of the elbow in the cubital fossa, and, passing obliquely downward, reaches the ulnar side of the forearm at a point about midway between the elbow and the wrist.
How is the axillary artery divided into three parts?
As it passes through the axilla, the artery is divided into three parts by pectoralis minor, as the muscle travels superolaterally from its origin at the 3rd, 4th and 5th ribs to its insertion on the medial aspect of the coracoid process. Conveniently, each segment gives off a corresponding number of branches.
Is the axillary artery part of the forelimb?
The Forelimb Arteries. The axillary artery is the continuation of the subclavian artery that runs to the axilla (arm pit in man), on its way to supplying the forelimb. On its way, it gives off the thoraco-acromial and lateral thoracic arteries and the circumflex scapular trunk.
Is the axillary artery part of the subclavian artery?
Axillary artery. The axillary artery (Fig. 2.32) is a continuation of the subclavian artery and it extends from the outer border of the first rib to the lower border of the teres major, from where it continues as the brachial artery. For descriptive purposes it can be divided into three parts by the pectoralis minor.
Is the axillary artery part of the pectoralis minor muscle?
To achieve adequate mobilization, it may be necessary to ligate and divide several venous tributaries and to divide part of the pectoralis minor muscle. A fascial layer beneath the axillary vein separates the vein from the axillary artery. The axillary artery pulse is often not palpable until this fascial layer is divided.