Final answer:
The liver is segmented into various parts for surgical planning; segments 6, 7, and 8 are part of the right lobe. The right hepatic vein and other hepatic vein branches are vital for the liver's venous drainage system. The hepatic portal system allows the liver to process nutrients and toxins from the alimentary canal.
Step-by-step explanation:
To solve completely the question regarding the liver's anatomy, we must understand its segmentation and vascular system. The liver is divided into two primary lobes - a larger right lobe and a smaller left lobe. The question references liver segments 6, 7, and 8, which are part of the functional hepatic segmentation, allowing for detailed surgical planning and interventions.
The right hepatic vein runs between segments 6 and 7, and another hepatic vein is mentioned between segments 7 and 8, likely referring to segmental or tertiary branches of the hepatic veins that are crucial for venous drainage of the liver. The hepatic portal system is essential for processing blood from the digestive system, with the hepatic artery providing oxygenated blood to liver tissue, while the hepatic portal vein delivers blood rich in nutrients from the alimentary canal. After processing by the liver, blood exits via the hepatic veins into the inferior vena cava.