FlowChart Veins into VenaCava: This flowchart maps venous drainage from body regions into the superior and inferior vena cavae, the major veins returning blood to the right atrium.
Major Systematic Veins: Major systemic veins include the superior and inferior vena cava, jugular veins, subclavian veins, and iliac veins, all channeling deoxygenated blood back to the heart.