Ch 4: ILTS Environmental Science: Systems of the Body

About This Chapter

Let us teach you about systems of the body. The video lessons and self-assessment quizzes in this chapter can prepare you to answer questions about life science on the ILTS Science: Environmental Science content area test.

ILTS Science: Environmental Science - Systems of the Body: Chapter Summary

Reaffirm your knowledge of the systems of the body through this chapter. This series of online video lessons can serve as an excellent study guide if you're preparing for the Illinois Licensure Testing System (ILTS) Science: Environmental Science content area test, which is part of the state's teacher certification process. Topics addressed in this chapter include the following:

  • Skeletal and muscular systems
  • Gas exchange in the human respiratory system
  • Types of circulatory systems
  • The human vascular system
  • The heart
  • Red blood cells and hemoglobin
  • The upper and lower gastrointestinal tracts
  • The excretory system
  • The central and peripheral nervous systems
  • The sympathetic and parasympathetic nervous systems

ILTS Science: Environmental Science - Systems of the Body Objectives

Aspiring environmental science teachers must pass this ILTS content area test to work in an Illinois public school. You'll have approximately five hours and 45 minutes to complete the test's 125 multiple-choice questions, which comprise six subareas. Among these is a subarea on life science, which is likely to include questions on systems of the body.

Experienced professional educators put together this chapter, which you can use as a study guide for the ILTS. It includes a number of brief video lessons, as well as several self-assessment quizzes, which can help you to both measure your knowledge of systems of the body and familiarize yourself with the types of questions you can expect on the ILTS.

13 Lessons in Chapter 4: ILTS Environmental Science: Systems of the Body
Test your knowledge with a 30-question chapter practice test
Skeletal System and Muscular System

1. Skeletal System and Muscular System

Do you know how many bones are in the human body? Check out this video lesson to uncover the answer, as well as understand the role and importance of the skeletal and muscular systems.

Gas Exchange in the Human Respiratory System

2. Gas Exchange in the Human Respiratory System

Did you know that the average human lung has a respiratory surface area that is roughly the same size as half of a tennis court? Believe it or not, that's how much surface area an active, healthy human needs to ensure that the body gets plenty of oxygen.

Circulatory System I: Types of Circulatory Systems

3. Circulatory System I: Types of Circulatory Systems

From cnidarians to humans, all animals need a circulatory system to absorb nutrients and get rid of waste. Find out why different kinds of animals have different systems, and see what a closed circulatory system and indoor plumbing have in common.

Circulatory System II: The Human Vascular System

4. Circulatory System II: The Human Vascular System

In this lesson, learn all about the operation of the human vascular system. What are the different types of blood vessels? How does blood flow through the human body? How does the system adapt to your body changing?

Circulatory System III: The Heart

5. Circulatory System III: The Heart

What purpose does the heart serve? And how do different types of hearts function? In this lesson, you'll learn about two, three and four-chambered hearts.

Circulatory System IV: Red Blood Cells

6. Circulatory System IV: Red Blood Cells

Why don't mature red blood cells have nuclei or mitochondria, and how do these guys squeeze through capillaries? While learning about the brief but glorious lives of red blood cells, you'll also see which characteristics help them transport oxygen and carbon dioxide to other cells.

Circulatory System V: Hemoglobin

7. Circulatory System V: Hemoglobin

Did you ever wonder how red blood cells can store enough oxygen to supply the entire human body? Join us in this lesson on hemoglobin to learn why red blood cells are so good at transporting oxygen and carbon dioxide. This lesson will make you see red (as well as blue and purple-maroon)!

Digestive System I: The Upper Gastrointestinal Tract

8. 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

9. 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.

Excretory System

10. 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.

The Central and Peripheral Nervous Systems

11. The Central and Peripheral Nervous Systems

Did you know that hammerhead sharks and platypuses share a special type of sensory neuron that humans and most other animals don't have? In this lesson, you'll find out what that sensory neuron and a whole lot of others can do. You'll also learn how the nervous system is organized and the differences between the central and peripheral nervous systems.

The Sympathetic and Parasympathetic Nervous Systems

12. The Sympathetic and Parasympathetic Nervous Systems

In this lesson, you'll learn about two subdivisions of the autonomic nervous system - the sympathetic and parasympathetic nervous systems. Watch as a hiker, Phil, runs away from a terrifying bear and see how these systems react to the impending danger!

Functions of the Nervous System

13. Functions of the Nervous System

In this lesson, we'll watch Timmy as he plays in his backyard. Watch what happens when he tries to catch a butterfly, hears a mean dog bark, and scrapes his knee. All of Timmy's reactions are tied to his nervous system. For a full explanation of what goes on in the human nervous system, check out the video!

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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