The axillary artery, which lies superior and posterior to the vein, can be identified by palpation and then exposed using sharp dissection. The exposure can be improved by one or two self-retaining retractors and by gentle downward axillary vein traction. The pectoralis minor is retracted or divided.
How deep is the axillary artery?
The axillary artery and vein are exposed using a longitudinal incision positioned approximately one fingerbreadth below the inferior border of the clavicle. The fibers of the pectoralis major muscle are split. The axillary vein lies below the muscle. The vein is mobilized for a distance of approximately 5 or 6 cm.
What are the boundaries of the axillary artery?
The axillary artery is a continuation of the subclavian artery that begins at the outer border of the first rib. It then courses through the axilla while being bordered by the lateral (superiorly), posterior (posteriorly), medial (inferiorly) cords of the brachial plexus and the ansa pectoralis (anteriorly).
At what point does the axillary artery become brachial?
Its origin is at the lateral margin of the first rib, before which it is called the subclavian artery. After passing the lower margin of teres major it becomes the brachial artery.
Where is the first part of the axillary artery?
The axillary artery is classically divided into three parts. The first part lies distal to the lateral border of the first rib and proximal to the pectoralis minor. It lies on top of the serratus anterior. It has one branch called the superior thoracic artery.
What comes off the axillary artery?
common trunk for subscapular artery and posterior circumflex humeral artery from the third part of the axillary artery. common trunk for subscapular artery and posterior circumflex humeral artery with the thoracodorsal artery originating directly from the axillary artery.
How can you tell the difference between an artery and a vein?
The main difference between nerve and vein is that nerve is an axon bundle of neurons in the peripheral nervous system, which carries nerve impulses whereas veins are blood vessels, which return deoxygenated blood towards the heart. Both nerves and veins vary in size.
What divides the axillary artery into three parts?
The axillary artery is divided into three parts by its relation to pectoralis minor muscle: the first part is proximal to pectoralis minor. the second part is posterior to pectoralis minor. the third part is distal to pectoralis minor.
What major artery is under the arm?
Brachial Artery: This artery begins under the pectoralis muscle and travels down the arm. It eventually splits into two arteries (the radial artery and the ulnar artery) at the elbow.
What does axillary mean?
1 : of, relating to, or located near the axilla. 2 : situated in or growing from an axil axillary buds.
How do you remember the relationships of axillary arteries?
Useful mnemonics to remember the branches of the axillary artery are:
- S AL SAP.
- Screw the lawyer, save a patient!
Where does the axillary artery terminate?
The axillary artery, the continuation of the subclavian, commences at the outer border of the first rib, and ends at the lower border of the tendon of the Teres major, where it takes the name of brachial.
What is the artery in your arm called?
Here’s the main artery, the axillary artery. It emerges from beneath pectoralis minor surrounded by major nerves. As it passes into the arm its name changes. From here on down, it’s the brachial artery.
Where is the axillary vein located?
The axillary vein arises at the inferior border of the teres major muscle at the inferior border of the axilla 3. The vein ascends through the axilla medial to the axillary artery and then courses anterior to the subclavian artery to leave the axilla at its apex.