In the system tray on the left side of the screen, deselect the skeletal system icon to remove the skeletal structures from the view and rotate the view to observe the back of the intestines. Note the network of vessels that supply the intestines. Rotate the view to observe it from the front, and then select and hide the jejunum and ileum. Locate the multiple loops of paired arteries and veins on the left side, near the descending colon. The looping arteries are the of the unpaired, straight , which extends along the front of the abdomen. a. List the organs that receive blood from these arteries. • • • • • Superior mesenteric vein Celiac trunk Superior mesenteric artery 17
b. Paired with these arteries are the looping of the .