Which of the following is the longest organ in the body?

The small intestine is the longest organ in the body, measuring about 6 to 7 meters (20 to 23 feet) in length in adults. This organ is crucial for digestion and nutrient absorption. It comprises three parts: the duodenum, jejunum, and ileum, which work together to break down food and absorb nutrients into the bloodstream. Its significant length allows for a large surface area, which is vital for maximizing nutrient absorption.

In contrast, while the large intestine is longer than the stomach and the liver, it is shorter than the small intestine, typically measuring around 1.5 meters (5 feet) long. The stomach and liver, although vital organs in digestion and metabolism, do not come close to the length of the small intestine. Thus, the small intestine stands out as the longest organ in the body, playing an essential role in digestive health.