left upper quadrant (LUQ)
left lobe of liver, spleen, stomach, portions of the pancreas, small intestine and colon
right upper quadrant (RUQ)
right lobe of liver, gallbladder, portions of the pancreas, small intestines, and colon
right lower quadrant (RLQ)
contains portions of small intestines and colon, right ovary and fallopian tube, appendix, and right ureter
left lower quadrant (LLQ)
contains portions of small intestines and colon, left ovary and fallopian tube, and left ureter