Answer :
Final answer:
In the context of liver anatomy, the hepatic veins are the vessels that course intersegmentally, which means they run between liver segments, and are significant in demarcating regions of the liver for surgical and diagnostic purposes.
Explanation:
When identifying the lobes of the liver and assessing a hepatic mass, it's important to understand the vessel architecture within the liver. The hepatic portal vein and hepatic arteries enter the liver at the porta hepatis, and deliver blood to the liver tissue from the systemic circulation and the gastrointestinal tract, respectively.
The hepatic portal vein provides most of the liver's oxygen supply, despite being partially deoxygenated, because it transports blood rich in nutrients from the small intestine. Conversely, the hepatic veins are responsible for draining blood from the liver into the inferior vena cava.
The vessels that course intersegmentally in the liver, separating the liver's internal structures, are the hepatic veins. These veins run in between the liver segments and are crucial for demarcation during procedures such as liver resections or identifying pathology. The portal veins, on the other hand, course intrasegmentally within the liver lobule framework, distributing blood to the various segments.
The vessels that course intersegmentally in the liver are the hepatic veins. They are the primary vessels involved in separating liver segments.
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