The gallbladder is a pear-shaped, hollow structure located under the liver and on the right side of the abdomen. Its primary function is to store and concentrate bile, a yellow-brown digestive enzyme produced by the liver. The gallbladder is part of the biliary tract. Here you can see the functional anatomy of gallbladder. Image by: https://www.instagram.com/tv/CcCggSODK1J/?igshid=YmMyMTA2M2Y=