The gallbladder concentrates and stores bile as a pear-shaped sac which it can release to help digestion after a fatty meal.
An adipocyte is a fat cell made up of adipose tissue. Adipose tissue is typically categorized as white adipose tissue and brown adipose tissue. Its main function is to synthesize and store energy in the form of fat. A healthy adult with average weight will have around 30 billion fat cells weighing approximately 13.5 kg.