HESI A2 Anatomy Practice Test 2026 – Complete Exam Preparation

The hepatic artery carries oxygen-rich blood to the liver. This artery is primarily responsible for delivering oxygenated blood that originates from the aorta, which is essential for the metabolic activities of the liver. The liver requires a significant amount of oxygen to carry out its functions, such as detoxification, protein synthesis, and the production of biochemicals necessary for digestion.

In addition to the hepatic artery, the liver also receives blood from the portal vein, which brings nutrient-rich but oxygen-poor blood from the gastrointestinal tract. However, the specific question asks about the blood supply from the hepatic artery, which distinctly provides the oxygen required for the liver's diverse physiological processes. Understanding this distinction is crucial for grasping the dual blood supply system of the liver and the importance of oxygen in maintaining liver health and function.