The liver is one of the most important organs in the human body. Anatomically, the liver is a meaty organ that consists of two large sections called the right and the left lobe. The rib cage partly protects the liver and cannot be felt if you were to touch it. However, it can be felt ascending and descending if you were to take a deep breath. The liver weighs an average of 1.3 kilograms in an adult human.