Quadrants of abdomen(four regions According two vertical lines cross the navel Right upper left upper quadrant(RUQ) RUQ LUQ quadrant (LUQ) Right lower Left lower quadrant(RLQ RLQ LLQ quadrant (LLQ)Right upper quadrant(RUQ) Right lower quadrant（RLQ） left upper quadrant（LUQ） Left lower quadrant（LLQ） RUQ LUQ RLQ LLQ Quadrants of abdomen (four regions) According two vertical lines cross the navel