What Organ Is Under the Right Ribcage?

The liver is a triangular shaped organ that extends across the entire abdominal cavity just below the diaphragm, explains InnerBody. The majority of the liver's mass is located on the right side of the abdominal cavity, protected by the lower ribs of the rib cage.

According to InnerBody, the liver performs vital functions relating to digestion, metabolism, immunity and nutrient storage. The liver is distinctly separated into a right and left lobe, with the right lobe being the largest. The gallbladder is positioned under the right lobe of the liver, and it acts as a storage organ to hold and secrete bile that is produced by the liver. The gallbladder is a small, pear-shaped organ that releases bile into the small intestines to aid in digestion.