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Excretion as an Example of Homeostatic Control

The liver: structure and function

  • 3 things to know
  • Components 01 and 03

Overview

The hepatic artery, hepatic portal vein and bile duct, lobules, hepatocytes, sinusoids and Kupffer cells, and the storage, detoxification and urea formation the liver carries out.

What you need to know

Answer each one before you reveal it.

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Key term

Define detoxification in the context of liver function.

Key term

Where is urea formed and what substances react to produce it?

Key term

What are Kupffer cells and what is their function?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What type of blood does the hepatic artery supply to the liver?

    Model answer

    Oxygenated blood.

  2. 2

    What does the hepatic portal vein carry to the liver?

    Model answer

    Deoxygenated blood rich in absorbed nutrients.

  3. 3

    Through which vessel does blood leave the liver?

    Model answer

    The hepatic vein.

  4. 4

    Through which structure does bile leave the liver?

    Model answer

    The bile duct.

  5. 5

    How is the liver structurally organised?

    Model answer

    The liver is divided into lobes which are further divided into lobules.

  6. 6

    Describe the shape of liver lobules and their key structural feature.

    Model answer

    Liver lobules are cylindrical structures with a central vein running through the middle.

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