right upper quadrant Lung
left upper quadrant Lung Spleen
right lower quadrant Lower lobe of Lung Liver Colon intestine gallbladder
left lower quadrant Pancreas lower lobe of lung intestine
Heart is in the middle of the chest behind breastbone. Stomach is below breastbone to left.
These are the primary organs and depending on the degree of upper or lower or even the center of the abdominal area the organs may change somewhat.