Health Sciences 2300A/B Lecture Notes - Lecture 10: Inferior Vena Cava, Superior Vena Cava, Popliteal Vein

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Systemic veins: named in a similar manner as the arteries, veins have opposite directional flow in relation to the arteries, eg a red blood cell in the brachial vein would move the axillary vein next. Deep veins: follow the path of accompanying arteries, popliteal, tibial, fibular, surrounded my muscle: contraction of muscle helps push blood back to the heart. Valves in veins help to ensure one directional flow of blood. When one valve fails it puts double the pressure on the valve below causing blood to pool beneath the skin. Only one systemic artery leaving the heart: aorta. 2:1 ratio of veins to arteries respectively in systemic circuit: 3 ways in which blood gets back to the heart, superior vena cava (part of systemic circuit) Superior vena cava: there is union of the 2 brachiocephalic vein which brings blood back into the right atrium, brachiocephalic vein receives blood from the subclavian vein and the vertebral vein.

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