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BIO304: Human Physiology

Unit 10: The Respiratory System   The respiratory system depends on the heart to pump blood to the lungs. In capillaries found in the lungs, carbon dioxide detaches from the hemoglobin in red blood cells and enters the air sacs known as alveoli. With exhalation, carbon dioxide is breathed out. With inhalation, oxygen is breathed into the alveoli. It moves out of the air sacs into the capillaries and attaches to the hemoglobin in red blood cells. The cells then carry oxygen back to the heart and out to the body’s cells. The gas exchange occurs each time we breathe. When we hold our breath, oxygen cannot get into the lungs and carbon dioxide cannot leave. The body cells may become oxygen deprived and carbon dioxide builds up. You know what happens next, we take a breath!

Unit 10 Time Advisory
This unit should take approximately 8.5 hours to complete.

☐    Subunit 10.1: 3 hours

☐    Subunit 10.2: 5.5 hours
 

☐    Reading: 0.25 hours

☐    Web Media: 0.25 hours

☐    Assessments: 5 hours

Unit10 Learning Outcomes
Upon successful completion of this unit, the student will be able to: - describe the structure and function of the organs of the respiratory system; - describe the mechanisms of breathing, including the muscles involved in inspiration and exhalation; - describe the mechanisms of gas exchange and gas transport (oxygen and carbon dioxide); and - identify and describe major diseases of the respiratory system.

10.1 Structure and Function of the Respiratory System   - Web Media: YouTube: Khan Academy’s “The Lungs and Pulmonary System” Link: YouTube: Khan Academy’s “The Lungs and Pulmonary System” (YouTube)

 Instructions: Click on the link above and watch this lecture for an
introduction to the lungs and pulmonary system.  

 Watching this lecture and pausing to take notes should take
approximately 45 minutes.  

 Terms of Use: This video is licensed under a [Creative Commons
Attribution-NonCommercial-NoDerives United States License 3.0](). It
is attributed to the Khan Academy. 
  • Reading: Wikibooks’ Human Physiology: “The Respiratory System” Link: Wikibooks’ Human Physiology: “The Respiratory System” (HTML)

    Instructions: Click on the link above and read this webpage to understand how the body takes in oxygen and gets rids of carbon dioxide. You may recall that the red blood cells are involved in the process of delivering oxygen to the body cells and bringing carbon dioxide back to the lungs to be exhaled. All the systems work together!

    Reading this webpage should take approximately 1 hour and 30 minutes.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpage above.

  • Reading: Wikibooks’ Human Physiology: “Breathing and Lung Mechanics” Link: Wikibooks’ Human Physiology: “Breathing and Lung Mechanics” (HTML)

    Instructions: Read the section titled “Breathing and Lung Mechanics” to learn about the process of breathing. Pay attention to the specifics of each step in the process.

    Reading this section should take approximately 15 minutes.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpage above.

  • Reading: Wikibooks’ Human Physiology: “Homeostasis and Gas Exchange” Link: Wikibooks’ Human Physiology: “Homeostasis and Gas Exchange” (HTML)

    Instructions: Read the section titled “Homeostasis and Gas Exchange” to learn how the actions of the respiratory system help to maintain homeostasis in the body.

    Reading this section should take approximately 15 minutes.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpage above.

  • Web Media: YouTube: CosmoLearning’s “Oxygen Transport” Link: YouTube: CosmoLearning’s “Oxygen Transport” (YouTube)

    Instructions: Click on the link above and watch this video for a quick illustration of the lungs’ role in gas exchange.

    Watching this video and pausing to take notes should take approximately 15 minutes.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpage above.

10.2 Respiratory Disorders   - Reading: Wikibooks’ Human Physiology: “Problems Associated with the Respiratory Tract and Breathing” through “Sleep Apnea” Link: Wikibooks’ Human Physiology: “Problems Associated with the Respiratory Tract and Breathing” (HTML) through “Sleep Apnea” (HTML)

 Instructions: Read the sections titled “Problems Associated with
the Respiratory Tract” through “Sleep Apnea” to learn ways in which
the respiratory system’s effectiveness can be compromised.  

 Reading these sections should take approximately 15 minutes.  

 Terms of Use: Please respect the copyright and terms of use
displayed on the webpage above.
  • Web Media: YouTube: Tom Weis Long’s “Understanding Asthma” and Health Science Channel’s “Pulmonary Fibrosis” Link: YouTube: Tom Weis Long’s “Understanding Asthma” (YouTube) and Health Science Channel’s “Pulmonary Fibrosis” (YouTube)

    Instructions: Click on the links above and watch these two videos for an illustration of how these two disorders affect the physiology of the respiratory system.

    Watching these videos and pausing to take notes should take approximately 15 minutes.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpages above.

  • Assessment: McGraw-Hill Online Learning Center: Seeley, Stephens, & Tate’s “Respiratory System – Clinical Application One” and “Respiratory System – Clinical Application Two” Link: McGraw-Hill Online Learning Center: Seeley, Stephens, & Tate’s “Respiratory System – Clinical Application One” (HTML) and “Respiratory System – Clinical Application Two” (HTML)

    Instructions: Click on the links above, read these examples, and respond to the questions that follow after working through all of the materials in Unit 10. Click the “Submit Answers” button at the bottom of the page for instant feedback.

    Completing these assignments should take approximately 2 hours.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpages above.

  • Assessment: McGraw-Hill Online Learning Center: Stuart Ira Fox’s “Respiratory Physiology Quiz: Multiple Choice 1”, “Respiratory Physiology Quiz: Fill in the Blanks”, and “Respiratory Physiology Quiz: Critical Thinking Exercises” Link: McGraw-Hill Online Learning Center: Stuart Ira Fox’s “Respiratory Physiology Quiz: Multiple Choice 1” (HTML), “Respiratory Physiology Quiz: Fill in the Blanks” (HTML), and “Respiratory Physiology Quiz: Critical Thinking Exercises” (HTML)

    Instructions: Click on the links above and complete these quizzes to demonstrate your understanding of respiratory physiology after you have worked through all of the materials in this unit. For the critical thinking questions, take a second after reading each question to think about how the concepts you have just learned apply and formulate a short, thoughtful answer. Click the “Submit Answers” button for instant feedback.

    Completing these assessments should take approximately 3 hours.

    Terms of Use: Please respect the copyright and terms of use displayed on the webpage above.