Ch 46: Holt McDougal Modern Biology Chapter 47: The Body's Defense System

About This Chapter

The Body's Defense System chapter of this Holt McDougal Modern Biology textbook companion course helps students learn the essential modern biology lessons of the body's defense system. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Body's Defense System textbook chapter.

How it works:

  • Identify the lessons in the Holt McDougal Modern Biology The Body's Defense System chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the bodily defense system 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.

Students will learn:

  • Causes of disease and types of pathogens
  • Anatomical barriers in the immune system
  • Causes and symptoms of inflammation
  • Cells of the innate immune system
  • Purpose of the complement system
  • Parts of the lymphatic system
  • Acquired immunity
  • Antibiotics and vaccines
  • Allergic reactions
  • Diseases of the Retroviridae family

Holt McDougal Modern Biology is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

9 Lessons in Chapter 46: Holt McDougal Modern Biology Chapter 47: The Body's Defense System
Test your knowledge with a 30-question chapter practice test
Pathogens and Disease: Definitions, Types & Causes

1. Pathogens and Disease: Definitions, Types & Causes

There are many different types of pathogens and many problems they cause. This lesson will teach you about four main types of pathogens, examples of each, and what problems they cause.

The Anatomical Barriers of the Immune System

2. The Anatomical Barriers of the Immune System

This lesson will cover the major anatomical barriers to infection of the innate immune system. We'll explore skin flora, gut flora, gastric acid, lysozymes, and the mucociliary apparatus.

What Is Inflammation? - Definition, Causes & Symptoms

3. What Is Inflammation? - Definition, Causes & Symptoms

This lesson will cover the process of inflammation and what your body might do after a bee sting. We'll find out the five cardinal signs of inflammation as well as anaphylactic shock, histamine and cytokines in the process.

Macrophages, Killer Cells & Other Cells of the Innate Immune System

4. Macrophages, Killer Cells & Other Cells of the Innate Immune System

This lesson will teach you about certain white blood cells of the innate immune system. Namely, we'll learn about phagocytes, monocytes, macrophages, mast cells, and NK cells.

The Complement System: Definition and Function

5. The Complement System: Definition and Function

This lesson will cover something known as the complement system. We'll delve into the key functions of this system, including opsonization, chemotaxis, and the formation of membrane attack complexes.

The Lymphatic System: Definition and Fundamental Components

6. The Lymphatic System: Definition and Fundamental Components

This lesson will cover something known as the lymphatic system. You'll learn about bone marrow, lymph, the thymus, lymph nodes, spleen, and much more as we explore this critical component of your immune system.

Acquired Immunity: T Cells, B Cells and Antibodies

7. Acquired Immunity: T Cells, B Cells and Antibodies

Have you ever wondered why some people don't ever seem to get sick? These people likely have an acquired immunity. Learn more about the immune system and how exposure to an illness one time can help your body to prevent that illness from ever occurring again.

Antibiotics and Vaccines

8. Antibiotics and Vaccines

Do you know why children must get regularly vaccinated? Have you ever wondered how an antibiotic works and why they are so widely prescribed? If so, this lesson will help you to understand how changes in medicine have almost eliminated several deadly diseases and added decades to the average person's lifespan.

Type I Hypersensitivity: Allergic Reactions

9. Type I Hypersensitivity: Allergic Reactions

This lesson delves into something known as type I hypersensitivity reactions. You'll find out how everything from mast cells, basophils, and IgE to histamine, bee stings, and peanut allergies all play a role in this process.

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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