HESI A2 Anatomy Practice Exam 2026 - Free Anatomy Practice Questions and Study Guide

The term that accurately describes the abundant bacteria in the large intestine is commonly known as intestinal flora. This includes a diverse array of microorganisms that play an essential role in digestion, vitamin synthesis, and immune function. The large intestine, or colon, is particularly rich in these bacteria, which help break down complex carbohydrates and fiber that are not digested in the small intestine.

While gut flora and microbiota can also refer to these communities of bacteria, "intestinal flora" specifically emphasizes their location within the intestines, making it a precise term. Dysbiosis, on the other hand, refers to an imbalance in these microbial populations, often associated with health issues, rather than describing the beneficial presence of bacteria as a whole. Overall, "intestinal flora" is a comprehensive term that captures the significance of these microorganisms within the large intestine.