You will need darkness to see the aurora. Isn't the flight over (from Europe to Seattle) during the day? If either flight will be at night, sit on the north side of the plane (right side coming over, left side on the return) for the best chance of seeing it.
In human anatomy, the inferior mesenteric artery, often abbreviated as IMA, is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the left colic (or splenic) flexure to the upper part of the rectum, which includes the descending colon, the sigmoid colon, and part of the rectum.
Inferior Vena Cava. The inferior vena cava is a large main vein that carries blood through the liver and back to the heart. Blood leaves your liver through a central vein in each lobule, and then through a hepatic vein, one of several short veins originating within the lobes of the liver as small branches.