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Human Anatomy Lab Manual: Lab 6: Respiratory System

Human Anatomy Lab Manual
Lab 6: Respiratory System
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table of contents
  1. Cover
  2. Title Page
  3. Copyright
  4. Table Of Contents
  5. About the Publisher
  6. About This Project
  7. Acknowledgments
  8. Lab 1: Anatomical Language
    1. Lab 1: Anatomical Language
    2. Pre-Lab 1
    3. Lab Activities
    4. Post-Lab 1 Questions
  9. Lab 2: Bones and Bone Markings
    1. Lab 2: Bones and Bone Markings
    2. Pre-Lab 2
    3. Lab Activities
    4. Post-Lab 2 Questions
  10. Lab 3: Spinal Cord and Spinal Nerves
    1. Lab 3: Spinal Cord and Spinal Nerves
    2. Pre-Lab 3
    3. Lab Activities
    4. Post-Lab 3 Questions
  11. Lab 4: Brain and Cranial Nerves
    1. Lab 4: Brain and Cranial Nerves
    2. Pre-lab 4
    3. Lab Activities
    4. Post-Lab 4 Questions
  12. Lab 5: Special Senses
    1. Lab 5: Special Senses
    2. Pre-lab 5
    3. Lab Activities
    4. Post-Lab 5 Questions
  13. Lab 6: Respiratory System
    1. Lab 6: Respiratory System
    2. Pre-Lab 6
    3. Lab Activities
    4. Post-Lab 6 Questions
  14. Lab 7: The Cardiovascular system
    1. Lab 7: The Cardiovascular system
    2. Pre-lab 7
    3. Lab Activities
    4. Post-Lab 7 Questions
  15. Lab 8: Digestive System
    1. Lab 8: Digestive System
    2. Pre-Lab 8
    3. Lab Activities
    4. Post-Lab 8 Questions
  16. Lab 9: Urinary and Reproductive Systems
    1. Lab 9: Urinary and Reproductive Systems
    2. Pre-lab 9
    3. Lab Activities
    4. Post-Lab 9 Questions
  17. Lab 10: The Muscular and Integumentary systems
    1. Lab 10: The Muscular and Integumentary systems
    2. Pre-Lab 10
    3. Lab Activities
    4. Post-Lab 10 Questions
  18. Vocabulary
    1. Vocabulary
  19. Image Credits

Lab 6: Respiratory System

Measurable Outcomes

  • Understand and identify the anatomical structures of the respiratory system on available models.
  • Deduce the pathway of air through the respiratory system.
  • Determine the pathway of pulmonary circulation.
  • Identify the various muscles involved in respiration.
  • Recognize the hallmarks of lung histology.
  • Demonstrate an adequate understand of the material in this section.

Background

The respiratory system is responsible for the gas exchange of oxygen and carbon dioxide. The main specialized organs of this process are the lungs which house clusters of sac-like structures known as alveoli. There are from 480 to 790 million alveoli which increase the efficiency of gas exchange by increasing surface area to around 118m2 in men and 91m2 in women. The respiratory system consists of the nasal cavity, pharynx, larynx, trachea, lungs, bronchi, bronchioles, and alveoli, along with their accessory structures. These structures are divided into the upper and lower respiratory systems, with the lower portion beginning at the larynx. The primary function of this system is to exchange oxygen and carbon dioxide between the body and the environment. Functionally, the respiratory system can be divided into the conducting zone, terminating at the terminal bronchioles; then air flows into the respiratory zone, where the actual gas exchange occurs.

Though we view each system individually in this lab, it is important to keep in mind that all organ systems overlap and work together in such a way that scientist are constantly discovering new connections. One such example is the nose. Not only is it the primary entrance and exit for respiration, but it also contains the olfactory epithelium, the primary structure of one of the special senses, olfaction. Likewise, the pharynx is a structure shared by both the respiratory and digestion systems.

Although both lungs functionally participate in respiration, they differ physically in various ways. The right lung is shorter and wider than the left lung, and the left lung occupies a smaller volume than the right. Another distinction between the two lungs is that the left lung contains the cardiac notch, which makes space for the heart. Furthermore, whereas the right lung has three lobes, the left lung has only two.

Though not visible on every model, each lung is surrounded by the pleura, which consists of two layers called the visceral and parietal pleurae. They are important because they lubricate the lungs and reduce friction during inhalation and exhalation.

Vocabulary for Respiratory System can be found on page(s) 169 .

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