Tests and diagnosis discussion for Gallstones: Many gallstones, especially silent stones, are discovered by accident during tests for other problems. But when gallstones are suspected to be the cause of symptoms, the doctor is likely to do an ultrasound exam. Ultrasound uses sound waves to create images of organs.
Best Answer: A feeder school feeds a particular high school. Usually, it means that all the students from that middle school go to a particular high school. Source(s):
1 Feeder line (disambiguation), a peripheral route or branch from a main line or trunk line. 2  Aquarium fish feeder, an electric or electronic device that is designed to feed aquarium fish at regular intervals. 3  Automatic document feeder, in office equipment.  Bird feeder.