When blood becomes deoxygenated it now travels thru the
to make its way back to the heart and then lungs to pick up more oxygen

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Vena cava also know as (SVC).

Explanation:  Blood provides oxygen and nutrients to the body and removes carbon dioxide and wastes. Oxygen-poor blood returns from the body to the heart through the superior vena cava also know as (SVC) and also inferior vena cava (IVC), these are the two main veins that bring blood back to the heart.

trachea, alveoli, lung capillaries, arteries