Summary Tributaries of the superior vena cava. The azygos-hemiazygos system
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Course
Anatomy & Physiology
Institution
Cambridge University (CAM)
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18. The tributaries of the superior vena cava. The azygos-hemiazygos system. The
lymphatic drainage of the thoracic cavity:
Tributaries of the superior vena cava
❖ The superior vena cava is a short vein of a large diameter, 2-3 cm without valves
❖ Arises from the confluence of the right and left brachiocephalic veins at the level of the
cartilage of the first right rib
❖ Descends vertically through the superior mediastinum to empty into the right atrium at the
level of the third sternocostal joint
❖ Carries deoxygenated blood from the upper half of the body(head, neck, upper limbs, thorax
and upper part of the back)
Tributaries
❖ azygos vein
❖ small veins draining the pericardium and other mediastinal structures
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