<prompt> The right adrenal vein drains intoRight renal veinInferior vena cavaSecond right lumbar veinThird right lumbar vein  <response>: These blood vessels supply a network of small aeries within the capsule of the adrenal glands. Venous blood is drained from the glands by the suprarenal veins, usually, one for each gland: The right suprarenal vein drains into the inferior vena cava. ref - semantischolar.org 