Ch 4: ScienceFusion The Human Body Unit 1.4: The Digestive & Excretory Systems

About This Chapter

The Digestive & Excretory Systems chapter of this ScienceFusion The Human Body Companion Course helps students learn the essential lessons associated with digestive & excretory systems. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with The Digestive & Excretory Systems textbook chapter.

How It Works:

  • Identify the lessons in the ScienceFusion The Digestive & Excretory Systems chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover the digestive & excretory systems topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Chapter Topics

You'll learn all of the human anatomy topics covered in the textbook chapter, including:

  • Parts and functions of the upper and lower GI tracts
  • Anatomy of the mouth
  • Functions of excretory system
  • The urinary system
  • Maintaining homeostasis

ScienceFusion is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

6 Lessons in Chapter 4: ScienceFusion The Human Body Unit 1.4: The Digestive & Excretory Systems
Test your knowledge with a 30-question chapter practice test
Digestive System I: The Upper Gastrointestinal Tract

1. Digestive System I: The Upper Gastrointestinal Tract

Did you know that there are digestive enzymes in your saliva? It's true. As soon as you put a piece of food in your mouth, the digestive process begins. Join us with this first of two lessons about the human digestive system, where we'll follow food through the upper gastrointestinal tract from the mouth through the stomach.

Digestive System II: The Lower Gastrointestinal Tract

2. Digestive System II: The Lower Gastrointestinal Tract

The lower gastrointestinal tract is the part of the digestive system that is responsible for the last part of food digestion and the expulsion of waste from the body. In this lesson, we'll look at each part of the system and what functions each serves in the process of digestion.

Anatomy and Physiology of the Mouth

3. Anatomy and Physiology of the Mouth

The digestive system is a long tube that breaks food down both mechanically and chemically. In this lesson, you will learn about the mouth and how it begins the digestive process - with the help of the teeth and the enzyme called salivary amylase.

Excretory System

4. 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.

Gross Anatomy of the Urinary System

5. Gross Anatomy of the Urinary System

Our body must detoxify and cleanse itself to thrive. That is why we depend so heavily on our liver and urinary system. In this lesson, we'll explore how toxins are filtered by our organs and how urine is formed and expelled with the nephron, bladder, ureters, and urethra.

How the Urinary System Maintains Homeostasis

6. How the Urinary System Maintains Homeostasis

Learn about how the urinary system maintains the human body by influencing blood composition and volume and understand how the kidneys are influenced by hormones.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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