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Whoa You're Breathing!

Whoa You're Breathing!. The Structure and Function of Lungs. A Presentation for Your Educational Benefit  by Blake Tashjian, Caroline Casey, and Matt Mahoney. The Respiratory System: The Diagram. The Passage of Air. Trachea Structure: Tube of many cartilage rings. Purpose:

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Whoa You're Breathing!

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  1. Whoa You're Breathing! The Structure and Function of Lungs A Presentation for Your Educational Benefit by Blake Tashjian, Caroline Casey, and Matt Mahoney

  2. The Respiratory System: The Diagram

  3. The Passage of Air Trachea Structure: • Tube of many cartilage rings. Purpose: • Maintains structure for passing air so that it does not collapse. http://www.naturalhealthschool.com/img/trachea.gif

  4. Cilia and Mucous Lining These two structures help keep the lung system clean.             Cilia Structure: • Hair-like projections Purpose: • Moves mucus up towards the pharynx       MucousLining Purpose:  • Traps contaminants such as dust or pollen http://www.cytochemistry.net/Cell-biology/cilia5.jpg http://content.answers.com/main/content/wp/en-commons/thumb/6/69/250px-Bronchiolar_epithelium_3_-_SEM.jpg

  5. www.nlm.nih.gov/.../ency/imagepages/19533.htm

  6. The Passage of Air • The Bronchial Tree • Structure: • Made of cartilage.  • Trachea divides into two branches: bronchi. • Then divide into "twigs": bronchioles.  • Then twigs open up to alveoli at the ends. • Purpose: • Spread air from trachea  •      over as much area as possible. www.nanomedicine.com/NMI/Figures/8.12.jpg

  7. The End of the Line Alveoli Structure: • Alveoli are small clustered sacks at the end of the bronchioles.  • They are one cell thick and are covered in capillaries.  • Have a pulmonary surfactant layer. http://www.coolschool.ca/lor/BI12/unit11/U11L03.htm

  8. The End of the Line Alveoli Purpose: • Used for diffusion of oxygen and carbon dioxide in between the blood and the lungs. • The spherical clusters increase surface area for diffusion. • Thin walls allow passive transport a quick process. • Lots of Capillaries increase contact with blood. • Pulmonary surfactant prevents collapse during exhalation. http://www.cartage.org.lb/en/themes/Sciences/LifeScience/GeneralBiology/Physiology/RespiratorySystem/HumanRespiratory/humrespsys3.gif

  9. Red Blood Cells Hemoglobin- a protein molecule in red blood cells that moves oxygen from lungs to body's tissues and returns carbon dioxide from tissues to lungs Absorbs Oxygen - O2 diffuses from alveoli into the capillaries and into the red blood cells -O2 enters the blood through inhaling Releases Carbon Dioxide -CO2 diffuses from red blood cells through the capillary walls into alveoli. -CO2 is released by exhaling http://www.bloodless.it/hemoglobin.jpg http://science.uwe.ac.uk/research/uploads/CRIB_blood_cells.jpg

  10. Sources "Alveoli." Coolschool. 28 Oct 2008 <http://www.coolschool.ca/lor/BI12/unit11/U11L03.htm>.  "Anatomy and Physiology of the Respiratory System Tutorial." The Virtual Autopsy. 28 Oct 2008        <http://www.le.ac.uk/pathology/teach/va/anatomy/case2/frmst2.html>.  Campbell, Neil A. Biology. Third ed. University of California, Riverside, California: Benjamin  Company, Inc., 1993.  "Gas Exchange In Humans". Biology 2210. 28 Oct 2008     <http://www.cdli.ca/~dpower/resp/exchange.htm#Transport>. "Hemoglobin." MedicineNet. 2008. MedicineNet, Inc.. 28 Oct 2008 <http://www.medicinenet.com/>.  "How the Lungs Work". National Heart Blood and Lung Institute. 28 Oct 2008 <http://www.nhlbi.nih.gov/health/dci/Diseases/hlw/hlw_all.html>.  "How Your Lungs Work". How Stuff Works. 28 Oct 2008 <http://health.howstuffworks.com/lung2.htm>.

  11. Sources Cont. "Lung Lobes and the Bronchial Tree". Nanomedicine. 28 Oct 2008     <http://www.nanomedicine.com/NMI/Figures/8.12.jpg>.  "Lung Structure and Function". Oncology Research Therapudics, Inc.. 28 Oct 2008   <http://www.ort-inc.com/lung_02.html>. Medlock, Amy. "Hemoglobin." 2007. 28 Oct 2008 <http://www.bloodless.it/hemoglobin.jpg>. "Production of Universal Blood Cells." Blog About Science. 2007. WordPress. 28 Oct 2008 <http://science.uwe.ac.uk/research/uploads/CRIB_blood_cells.jpg>.  Starr, Cecil, and Ralph Taggart. Biology: The Unity and Diversity of Life. Pacific Grove: Brooks/Cole, 2001.  "Your Lungs: Human Respiratory System." Lungusa. The American Lung Association. 28 Oct     2008 <http://www.lungusa.org/site/pp.asp?c=dvLUK9O0E&B=22576>.

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