About This Chapter
Human Gas Exchange Systems - Chapter Summary
While studying these lessons, you can improve your understanding of human gas exchange systems. Some of the topics covered include parts of the human circulatory system and pulmonary function tests. This chapter can also help you understand how the diaphragm contracts and relaxes. After reviewing the lessons, you should be ready to do the following:
- Explain how your lungs supply your body with oxygen
- Discuss gas exchange in the human respiratory system
- Provide details about how your entire body receives oxygen and nutrients
- Communicate how ventilation muscles cause inspiration and expiration
- Recall the most common way to measure airflow
- List factors that affect the human gas exchange system
These lessons offer the flexibility and convenience of online learning. Vocabulary words are highlighted in bold for quick reference and review of important concepts. You can optimize use of this resource with short quizzes that test your knowledge of each lesson.
1. How Our Lungs Work: Main Processes & Function
Do you know what happens to the air that you breathe in? Learn how your lungs take in air to supply your body with oxygen and what waste gas is expelled from your lungs when you breathe out.
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.
3. The Human Circulatory System: Parts and Functions
In this lesson, you will take a ride on the transportation system of the body called the circulatory system and its two parts: the pulmonary circuit and the systemic circuit. Take a look inside and see how every inch of your body receives the oxygen and nutrients it needs.
4. 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.
5. What Are Pulmonary Function Tests?
Pulmonary function tests are used to measure air movement into and out of the lungs. Spirometry is the most common way to measure airflow. This lesson will describe the use of spirometry to measure lung volumes and flow rates as well as how breathing disorders are diagnosed.
6. Factors that Affect the Human Gas Exchange System
This lesson will help you understand the various factors that affect the gas exchange system in our bodies. We'll look at how each factor affects the ability of the lungs to exchange gas and oxygenate the body.
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