About This Chapter
Human Respiratory System Overview - Chapter Summary
Ensure you have a quality understanding of the human respiratory system using the short lessons in this chapter. Our expert instructors provide entertaining explorations of topics that include gas transport, respiratory conditions and gas exchange efficiency. Review these lessons at your own pace. When finished, you will be able to:
- Discuss the gross anatomy of the lungs and airways
- Provide details about gas exchange in the human respiratory system
- Describe the respiratory surface and gas exchange efficiency
- Exhibit knowledge of how hemoglobin transports oxygen throughout the body
- Explain how carbon dioxide is transported in the blood
- List types of respiratory diseases and conditions
The lessons in this chapter are available in two formats: videos and full transcripts. Videos average 8 minutes each and feature clickable timelines you can use to quickly skip to key topics within the lessons. Transcripts allow you to print the lessons or read them online as texts. With each lesson is a short quiz designed to assess your comprehension of its contents. Any questions you have about this chapter's topics can be submitted to our experts.
1. Gross Anatomy of the Airway and Lungs: Conducting & Respiratory Zones
The respiratory system includes the lungs as well as other organs that help to get oxygen into the blood and carbon dioxide out of the blood. The conducting zone of the respiratory system carries oxygen into the lungs and carbon dioxide out of the lungs. The respiratory zone is where oxygen and carbon dioxide move into and out of the blood.
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 Respiratory Surface and Gas Exchange Efficiency
The respiratory membrane includes millions of alveoli with a surface area as large as a tennis court. This large respiratory surface area, combined with other factors, makes for efficient gas exchange to meet our metabolic needs.
4. 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.
5. 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.
6. Types of Respiratory Conditions & Diseases
Breathing is not always easy. Respiratory conditions can make it hard to catch your breath. Learn about all types of respiratory conditions, including the common cold, flu, pneumonia, asthma, cystic fibrosis, emphysema and chronic bronchitis.
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