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The third part, also known as the postscalene part, [4] extends from the lateral margin of the muscle to the outer border of the first rib, where it becomes the axillary artery. [ 1 ] [ 2 ] The first portions of the two vessels require separate descriptions; the second and third parts of the two arteries are practically alike.
The dorsal scapular artery anastomoses with the subscapular artery, providing an alternate route to the 3rd part of the axillary artery in the event of a slowly forming occlusion. The suprascapular artery branches off from the thyrocervical trunk, which in turn arises from the first part of the subclavian artery. This suprascapular artery ...
The axillary artery is accompanied by the axillary vein, [2] which lies medial to the artery, along its length. In the axilla, the axillary artery is surrounded by the brachial plexus . [ 2 ] The second part of the axillary artery is the reference for the locational descriptions of the cords in the brachial plexus .
The internal carotid artery; The arteries of the brain; The arteries of the upper extremity The subclavian artery; The axilla. The axillary artery; The brachial artery; The radial artery; The ulnar artery; The arteries of the trunk The descending aorta. The thoracic aorta; The abdominal aorta; The common iliac arteries The hypogastric artery ...
2.3 Left subclavian artery ... It is a portion of the aorta commencing at the upper part of the base of the left ventricle, ... Buccal artery; Third portion
Just above the level of the clavicle, the third portion of the subclavian artery curves lateralward and downward from the lateral margin of the scalenus anterior, across the first rib, to the axilla, and this is the situation most commonly chosen for ligaturing the vessel.
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First part of subclavian artery (base) The vertebral artery runs from base to apex (prior to entering the transverse foramen of 6th cervical vertebra). [citation needed] The carotid tubercle separates the vertebral artery which passes directly behind it from the common carotid artery which lies directly in front of it.