How are the liver’s lobules organized around central veins, and where are portal triads located?

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Study for the NBME Histology Test. Access flashcards and multiple choice questions, each with hints and explanations. Prepare effectively for your exam!

Multiple Choice

How are the liver’s lobules organized around central veins, and where are portal triads located?

Explanation:
Liver lobules are hexagonal units with a central vein in the middle. At the six corners of each hexagon sits a portal triad, which includes a branch of the hepatic artery, a branch of the portal vein, and a bile duct. Blood from the portal triads flows through sinusoids toward the central vein, while bile produced by hepatocytes drains toward the bile ducts in the portal triads. This arrangement—central vein in the center and portal triads at the corners—best matches the described organization.

Liver lobules are hexagonal units with a central vein in the middle. At the six corners of each hexagon sits a portal triad, which includes a branch of the hepatic artery, a branch of the portal vein, and a bile duct. Blood from the portal triads flows through sinusoids toward the central vein, while bile produced by hepatocytes drains toward the bile ducts in the portal triads. This arrangement—central vein in the center and portal triads at the corners—best matches the described organization.

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