Welcome back to our Tour of the Body series! This post is all about the lovely liver, and its sidekick the gallbladder. The heart might be the hardest working muscle in the body, but the liver is probably the hardest working organ.

The “Tour of the Body” Series on digestion rounds off with the pancreas. Did you know that your pancreas makes 1-4 liters of digestive juices a day? And, it's also part of the endocrine system?

The “Tour of the Body” Series continues with the intestines and the microbiome. Did you know 70% of your immune system resides in your gut?

The “Tour of the Body” Series continues with the stomach and the motor motility complex. Did you know your stomach acid is part of your immune system?

The “Tour of the Body” Series begins with digestion, and the first stop of digestion is the mouth, then the esophagus. Did you know saliva is actually part of our immune system?