DIGESTIVE SYSTEM
PANCREAS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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blood and bile flow towards the center of the lobule
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blood flows towards the center and bile towards a triad of the lobule
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blood and bile flow towards the triad of the lobule
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bile flows towards the center and blood towards a triad of the lobule
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Detailed explanation-1: -As noted earlier, the classic liver lobule is a hexagonal solid in which the blood flows from the periphery of the lobule to the center, and bile flows in the opposite direction (Fig. 18.4).
Detailed explanation-2: -Portal triads are composed of three major tubes. Branches of the hepatic artery carry oxygenated blood to the hepatocytes, while branches of the portal vein carry blood with nutrients from the small intestine. The bile duct carries bile products away from the hepatocytes, to the larger ducts and gall bladder.
Detailed explanation-3: -The portal triad contains the extrahepatic segments of the portal vein, hepatic artery, and bile ducts. Injury to the portal triad is uncommon but is one of the most difficult to manage traumatic injuries associated with high morbidity and mortality.
Detailed explanation-4: -Blood enters into the liver lobules via the hepatic artery, which then forms hepatic sinusoids that drain into the central vein in the centrilobular region of the liver (also called zone 3).