1 / 57

Understanding the Respiratory System

Explore the anatomy and functions of the respiratory system, including lung volumes, gas exchange, and muscles involved in breathing. Learn about the structure of the lungs and the vital role they play in ventilation. Dive into the complexities of air flow and gas exchange mechanisms. Discover how the respiratory system maintains homeostasis through precise regulation of oxygen and carbon dioxide levels. Join us on a fascinating journey through the pathways of respiration.

denise
Download Presentation

Understanding the Respiratory System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Respiratory System

  2. Objective 1 • See diagram

  3. Pathway: • Nostril—sinuses—pharynx—larynx—trachea—bronchi—bronchioles—bronchiole tube--alveoli

  4. alveoli

  5. Objective 2: Protection • Mucus collects dust and debris • Cilia propel mucus • Hairs filter air

  6. Objective 3 Membrane Structure Single cell layer thick Covered with capillaries Allows rapid exchange of gases

  7. Objective 4: Lungs/Pleura • Left Lung—two lobes • Right lung—three lobes • Pleura—thin lining on outside between lung and thoracic wall

  8. Lab • Locate the respiratory structures on the cat pluck. • Insert the pins in the structures.

  9. Day 2 Agenda: Look over 6 weeks grades Conduct lung volume lab

  10. Respiration Unit Day 3 "Virtue herself is her own fairest reward."-Silius Italicus, Punica

  11. Today’s Agenda • Look over air flow sequence • Notes on objective 5-9 • Lung volume Lab

  12. Boyles Law and Breathing • Boyles Law: Pressure of a gas varies inversely with its volume. Inspiration lowers pressure in thorax, air flows inward. Expiration raises pressure, air moves out.

  13. Objective 6: Muscles of Inspiration • Inspiration occurs when the diaphragm and the intercostal muscles contract. • Expiration occurs more passively as these muscles relax and the lungs recoil.

  14. Obj. 7 Partial Vacuum The intrapleural space (space between lung and wall of chest) always has a more negative pressure than the interpulmonary space (inside lungs).

  15. Obj. 7 Partial Vacuum The negative pressure must exist at all times to keep the lung in its proper shape and location to prevent lung collapse.

  16. Obj. 8 Pulmonary Ventilation • Friction in airways causes resistance and results in more strenuous breathing. • Lung compliance depends on the elasticity of the lungs and chest flexibility.

  17. Obj. 8 Pulmonary Ventilation • Surface tension of alveolar fluid reduces alveoli size and could collapse alveoli.

  18. Obj. 9 Lung Volumes • Tidal volume – normal inhale/exhale amount • Residual volume – air that remains in lungs after exhale.

  19. Obj. 9 Lung Volumes • Inspiratory volume – amount that can be forcefully inhaled • Expiratory reserve – amount of forced exhale

  20. Lung Volume Lab:

  21. Respiration Unit: Day 4

  22. Today’s Agenda • Revisit Lung Volumes and gross anatomy. • Quiz • Complete Volumes worksheet using summary chart in notes • Notes on objectives 10-13

  23. Today’s Agenda • Notes on objectives 10-13 • Respiration video • Practice questions

  24. Obj. 10 Composition of Atmospheric and Alveolar Air

  25. Obj. 10 • Oxygen goes into blood @ alveoli • Oxygen moves from blood into cells at the capillary bed. • Oxygen is transported by hemoglobin. • Carbon dioxide is most likely transported at bicarbonate ion.

  26. Obj. 11 • Oxygen is transported in the blood attached to hemoglobin HHb + O2 --> HbO2

  27. Objective 12 • Carbon dioxide is carried in the body primarily as bicarbonate ion. CO2 +H2O -->H2CO3-->H + CO3-

  28. Respiration Unit: Day 6 "The scientific theory I like best is that the rings of Saturn are composed entirely of lost airline luggage."-Mark Russell

  29. Today’s Agenda • Complete Objective Notes • Practice matching symptom & disorder • Homeostatic Imbalances sheet

  30. Obj. 11 • Oxygen is transported in the blood attached to hemoglobin HHb + O2 --> HbO2

More Related