A 52-year-old man with a 20-year history of alcohol consumption presents with ascites, jaundice, and spider nevi. A liver biopsy is performed, and the histopathology shows the characteristic features of cirrhosis. The structure marked **A** in the diagram represents regenerative nodules surrounded by fibrous septa. Which of the following best describes the pathophysiological significance of this structure in the context of end-stage liver disease?