Ch 43: The Human Respiratory System

About This Chapter

Increase your understanding of the human respiratory system, including topics like gas and carbon dioxide transport in the blood. If you are preparing for an exam, these lessons and quizzes can help you feel more confident by testing your knowledge of these topics in advance.

The Human Respiratory System - Chapter Summary

In these lessons on the human respiratory system, you'll learn about audible vibrations in the lungs and the process of converting organic compounds into ATP. You'll also gain an understanding of gas exchange in the human respiratory system. By the end of the chapter, you should be ready to:

  • Discuss the respiratory surface area of the human lung
  • Explain how oxygen and carbon dioxide are transported in blood
  • Describe how hemoglobin carries oxygen to tissues
  • Recall the process of cellular respiration
  • Explain how the diaphragm contracts and relaxes during ventilation
  • Detail how phonation works

The clear and engaging teaching style employed by our educators helps you quickly get up to speed on the human respiratory system. For video lessons, the timelines let you quickly jump to the topics you need to review. A brief multiple-choice quiz is available for each lesson to test your knowledge.

7 Lessons in Chapter 43: The Human Respiratory System
Test your knowledge with a 30-question chapter practice test
Gas Exchange in the Human Respiratory System

1. 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.

Gas Transport: Oxygen and Hemoglobin

2. Gas Transport: Oxygen and Hemoglobin

Did you know that almost all of the oxygen transported in our blood is bound to hemoglobin? Hemoglobin is loaded with oxygen in the lungs and unloaded of oxygen in the metabolizing tissues. This lesson will describe how oxygen is transported in our blood.

Carbon Dioxide Transport in the Blood

3. Carbon Dioxide Transport in the Blood

While carbon dioxide is a metabolic waste product, it plays some important physiological roles as well. This lesson describes how carbon dioxide is transported in our blood, how carbon dioxide is converted into a pH buffer, and how carbon dioxide helps with oxygen transport.

Gas Transport: Effect of Temperature, pH & Metabolism

4. Gas Transport: Effect of Temperature, pH & Metabolism

Hemoglobin carries almost all the oxygen to our metabolizing tissues. This lesson discusses physiological factors that stimulate hemoglobin to unload oxygen in our tissues. For example, temperature, carbon dioxide, pH and metabolism all influence the affinity of hemoglobin for oxygen.

Compare & Contrast Breathing & Cellular Respiration

5. Compare & Contrast Breathing & Cellular Respiration

This lesson is on breathing and cellular respiration. Today we'll learn the details of each process and look at key differences and similarities. Then test your knowledge with a short quiz.

How Ventilation Muscles Cause Inspiration and Expiration

6. How Ventilation Muscles Cause Inspiration and Expiration

What is ventilation? It includes both inspiration and expiration, the movement of air into and out of our lungs. In this lesson, learn about how the diaphragm contracts and relaxes and its impact on lung volume.

Phonation: Definition & Process

7. Phonation: Definition & Process

Language production starts with the making of basic sound. In this lesson you will learn about the physical process of sound production, which is called phonation.

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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