LEFT SUBCLAVIAN ARTERY Meaning and
Definition
-
The left subclavian artery is a major blood vessel that branches off from the aortic arch in the human body. It is part of the systemic circulation system and is one of the main arteries supplying oxygenated blood to the upper limbs and other important structures in the chest and neck.
Originating on the left side of the body, specifically behind the left clavicle (collarbone), the left subclavian artery travels upwards through the thoracic cavity before passing over the first rib. It then continues its course in the neck, where it runs behind the anterior scalene muscle and beneath the clavicle towards the armpit.
The left subclavian artery provides crucial blood supply to various structures. It supplies oxygenated blood to the left arm, including the bones, muscles, and skin. Additionally, it gives rise to branches that supply blood to vital structures, such as the brain through the vertebral artery, the chest wall through intercostal arteries, and the thyroid gland through the thyroid ima artery.
Together with the right subclavian artery, the left subclavian artery forms part of the subclavian vascular tree, working in conjunction with other blood vessels to ensure proper circulation throughout the body. Knowledge of the left subclavian artery's anatomy and function is important for medical professionals to assess and diagnose conditions that may affect its blood flow or lead to complications in the structures it supplies.
