The largest muscle in the human body is the Gluteus Maximus. It is responsible for keeping your posture upright, and is the principal antigravity force working when you walk up stairs.

However, the largest organ in the human body is actually external, it’s the skin. Covering your entire body, the skin serves as a crucial barrier between you and the outside world.

Using that definition, it could be the largest organ in the body, taking up a bigger volume than even our skin. This organ might help protect the rest of our organs and tissue.

Scientists say they’ve discovered a new organ — possibly the human body’s largest — and it was hiding in plain sight, according to a new study.

The colon is part of the large intestine, and it absorbs water and nutrients from food. Learn more about what the colon does and its anatomy here. Medical News Today ...