A(n) ________ is performed to provide direct visualization of the large intestine, enabling the gastroenterologist to determine the cause of diarrhea, constipation, bleeding, or lower abdominal pain.

Large Intestine

The last part of the gastrointestinal tract, responsible for water absorption and the formation of feces.

Gastroenterologist

A specialist who diagnoses and treats disorders of the entire gastrointestinal tract, including the stomach, intestines, and associated digestive organs.

Direct Visualization

The act of observing or inspecting something directly, rather than through an intermediary device like a camera or mirror.