Lesson Plan: The Liver Biology

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the structure of the liver and the role of the liver in excretion.


Students will be able to

  • describe the macroscopic structure of the liver including the associated blood vessels, the hepatic vein, the hepatic artery, and the hepatic portal vein,
  • describe the microscopic structure of the hepatocyte cells of the liver,
  • describe the role of the liver in breaking down harmful or excess metabolic waste products,
  • outline the basic process of deamination as the removal of the amino group from amino acids,
  • describe the ornithine cycle as the process of converting toxic ammonia to urea for excretion.


Students should already be familiar with

  • the major organs of the human body.


Students will not cover

  • the kidneys’ or the bladder’s roles in urine excretion.

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