What path will the drug take if it acts on the lungs and is injected into a vein in the right arm?

Brachial vein → right atrium → right ventricle → pulmonary artery → pulmonary capillaries (part of the drug can already pass to the lungs) → pulmonary venulls → pulmonary veins → left atrium → left ventricle → aorta → artery supplying the lungs (drug together with nutrients gets into the tissue of the lungs).

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