Definition: Arterial necrosis refers to a blockage or narrowing of a blood vessel in the heart, typically caused by an injury or disease. The word "arterionecrotic" implies inflammation or tissue damage. Detailed definitions: 1. Arterial necrosis: A blood vessel is damaged or blocked. It may be caused by a variety of factors such as trauma, infections, or stress. 2. Artery blockage: An artery is clogged with material that blocks the flow of blood. This can occur due to a variety of causes including narrowing or injury to the artery. 3. Arterial block (inflammation): Inflammation within a vessel occurs when there's an overactive response by the body to damaged cells or tissues. It typically leads to inflammation, swelling, and redness around the blood vessel. 4. Artery injury: A cut, fracture, or other external force causes damage to the artery walls. This can lead to necrosis of the vessel tissue. 5. Arterial blockage (inflammation): The body's response to a damaged arterial wall results in inflammation within the vessel itself and leads to necrosis. 6. Artery injury (necrosis): Necrosis occurs when cells die or are destroyed by an inflammatory reaction, leading to destruction of tissue around the artery. Each definition describes specific ways that these conditions can occur with varying degrees of severity and impact on the heart's function and blood flow.

arterionecrosis