Ch 42: Excretion & Osmoregulation

About This Chapter

Use this collection of engaging biology lessons to review excretion and osmoregulation. This self-paced study resource can help you quickly solidify your understanding of these topics for exams, homework assignments, class projects or just for fun.

Excretion & Osmoregulation - Chapter Summary

Review these short biology lessons to study excretion and osmoregulation processes. Inside the chapter, you'll find engaging and informative lessons that break down the functions of the human excretory system's parts, such as the kidneys and liver. You'll also see how nitrogenous wastes are managed by the excretory system. Working through this chapter can help you:

  • Understand the purpose and function of the human excretory system
  • Know how nitrogenous wastes are produced and disposed of
  • Explain the excretion process for plants, cells and animals
  • Evaluate the structure and functions of the liver and kidneys
  • Determine how water balance is regulated by the kidneys
  • Outline the stages of urine formation

Each lesson comes with a short quiz to help you retain the information you've studied. To further solidify your understanding of the material, you're encouraged to submit questions to our instructors and take the comprehensive chapter exam. Lessons come with printable transcripts, and your course Dashboard helps you navigate to specific lesson topics. Finally, we've made the lessons accessible on any computer or mobile device so you can study wherever it's convenient.

7 Lessons in Chapter 42: Excretion & Osmoregulation
Test your knowledge with a 30-question chapter practice test
Excretory System

1. Excretory System

Each year in the U.S., close to 400,000 people with kidney failure undergo dialysis treatment in order to remove waste, remove excess fluid and restore electrolyte balance. Kidneys, the workhorses of the excretory system, perform these same functions more effectively than any machine. In this lesson, we'll talk about how the excretory system removes toxic substances from the body.

Nitrogenous Wastes: Definition, Forms & Interrelationships

2. Nitrogenous Wastes: Definition, Forms & Interrelationships

The natural processes of creating energy always result in some sort of wasteful byproduct. In this lesson we are going to look at how organisms produce and dispose of nitrogenous wastes and see how this relates to those organisms' evolutionary history.

Excretion: Definition & Examples

3. Excretion: Definition & Examples

In this lesson, we'll explore the varied ways that plants, animals, and cells excrete toxic substances and metabolic wastes. We'll look at some of the specialized structures that humans and animals have to complete these necessary excretory tasks.

Liver: Structure & Function

4. Liver: Structure & Function

Your liver is a big organ with big jobs. It sits on the right-hand side of your body and helps out with many different tasks that keep you healthy, such as cleaning your blood, storing energy, and making bile and cholesterol.

Kidneys: Structure & Function

5. Kidneys: Structure & Function

Your kidneys don't get a lot of attention, but they are important to your health. Learn about your kidneys and the jobs they do, like filtering wastes out of your blood, balancing fluids, adjusting your blood pressure and helping to make blood cells.

How the Kidneys Regulate Water Balance

6. How the Kidneys Regulate Water Balance

Water balance is essential to our health and survival. This lesson explores how the kidneys regulate water balance with special cells known as osmoreceptors and a process called osmoregulation. You'll also learn how this process relates to a rare form of diabetes known as diabetes insipidus.

The Three Processes of Urine Formation

7. The Three Processes of Urine Formation

Urine may be a waste product, but it is a carefully created waste product. There are three main stages in urine formation, and this lesson covers them all!

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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