Discovering Subclavian Veins: Key to Upper Extremity Circulation
The subclavian veins, discovered by Italian anatomist Giovanni Battista Morgagni in the 18th century, play a crucial role in the human circulatory system. These veins, two in number, connect the upper extremities to the heart. Each subclavian vein, measuring between one to two centimeters in diameter, originates at the outer border of the first rib as an extension of the axillary vein. They run beneath the collarbone and connect to the internal jugular veins to form the innominate, or brachiocephalic, veins. This connection allows the subclavian veins to carry blood from the upper extremities back to the heart. Additionally, they connect with several smaller veins in the body, aiding in the overall circulation process. The subclavian veins, with their strategic location and function, are vital for efficient blood flow. Understanding their structure and role in the circulatory system is crucial for medical professionals and researchers.
