<P> The human abdomen is divided into regions by anatomists and physicians for purposes of study, diagnosis, and therapy . In the four - region scheme, four quadrants allow localisation of pain and tenderness, scars, lumps, and other items of interest, narrowing in on which organs and tissues may be involved . The quadrants are referred to as the left lower quadrant, left upper quadrant, right upper quadrant and right lower quadrant, as follows below . These terms are not used in comparative anatomy, since most other animals do not stand erect . </P> <Ul> <Li> The left lower quadrant (LLQ) of the human abdomen is the area left of the midline and below the umbilicus . The LLQ includes the left iliac fossa and half of the left flank region . The equivalent term for animals is left posterior quadrant . </Li> <Li> The left upper quadrant (LUQ) extends from the median plane to the left of the patient, and from the umbilical plane to the left ribcage . The equivalent term for animals is left anterior quadrant . </Li> <Li> The right upper quadrant (RUQ) extends from the median plane to the right of the patient, and from the umbilical plane to the right ribcage . The equivalent term for animals is right anterior quadrant . </Li> <Li> The right lower quadrant (RLQ) extends from the median plane to the right of the patient, and from the umbilical plane to the right inguinal ligament . The equivalent term for animals is right posterior quadrant . </Li> </Ul>

Which of the following organs are contained within the right upper quadrant of the abdomen