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#vena cava #blue blood #heart input #venous return #deoxygenated blood #right atrium #blood circulation

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#vein #blood circulation #cardiovascular system #blue blood #deoxygenated blood #heart function

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#vein #deoxygenated blood #blood vessel #circulation #blue blood

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#venous blood #deoxygenated blood #blood circulation #return to heart #cardiovascular #blue blood

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#pulmonary artery #lung vessel #deoxygenated blood #pulmonary circulation #pulmonology #anatomy #blood vessel

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#pulmonary artery #heart to lungs #deoxygenated blood #pulmonary circulation #cardiology #anatomy #right ventricle outflow

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#vein #deoxygenated blood #venous return

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#yretra #vein #cardiovascular system #oxygenated blood #deoxygenated blood #blood exchange

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#vein #venous blood #deoxygenated blood #blue blood vessel #circulation #blood return

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#inferior vena cava #IVC #vein #deoxygenated blood

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#heart blood flow #yretra #vein #heart pump #oxygenated blood #deoxygenated blood #circulation direction