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Gas Exchange at a Cellular Level

Gas Exchange at a Cellular Level. By Holly 2 and Aaron. O 2 and CO 2 in Blood. Oxygen is carried by hemoglobin. Dissolved in the plasma. Respiration. Process of delivering O 2 to cells and carrying away CO 2 . Includes: gas exchange in lungs circulation of gases through bloodstream

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Gas Exchange at a Cellular Level

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  1. Gas Exchange at a Cellular Level By Holly2 and Aaron

  2. O2 and CO2 in Blood • Oxygen is carried by hemoglobin. • Dissolved in the plasma.

  3. Respiration • Process of delivering O2 to cells and carrying away CO2. • Includes: • gas exchange in lungs • circulation of gases through bloodstream • transfer of gases at cellularlevel http://www.biology.arizona.edu/chh/problem_sets/lung_toxicology/graphics/gas_exchange.gif

  4. Breathing Anatomy and Gas Exchange http://www.teachertube.com/view_video.php?viewkey=f0710c16983b9eab5364

  5. Respiration Process • air goes into lung sacs • O2 from the air enters the blood • CO2 exits from the blood into the air • blood reaches the tissues • O2 diffuses into cells • CO2 enters the blood • blood circulates back to the lungs http://catalog.nucleusinc.com/imagescooked/2672W.jpg

  6. HowStuffWorks Gas Exchange "Gas Exchange."  17 February 2005.  HowStuffWorks.com. <http://health.howstuffworks.com/adam-200022.htm>  28 October 2008.

  7. Path of O2 and CO2 • Partial Pressure is exerted by a certain gas among a mixture of other gasses. • Partial pressure is a measure of how much of that gas is present in a mixture. • Gas diffuses in the direction with the least the partial pressure. • Simple Diffusion - Oxygen diffuses through the membrane and plasma, and is taken up by the RBC (Red Blood Cells.) http://kentsimmons.uwinnipeg.ca/cm1504/Image132.gif

  8. Magic School Bus – Works Out http://www.youtube.com/v/rxUAECHuGoQ&hl=en&fs=1&rel=0&start=240

  9. Hindrances to gas exchange • When a blood vessel is damaged a clot forms. • Clotting can prevent gas exchange. • A lack of hemoglobin can hinder cellular respiration. • Hemophilia is caused by a lack of hemoglobin http://media-2.web.britannica.com/eb-media/28/98328-004-5514AFAC.jpg

  10. Collagen fibers Red blood cell Fibrin clot Plateletplug Platelet releases chemicalsthat make nearby platelets sticky Clotting factors from: Platelets Damaged cells Plasma (factors include calcium, vitamin K) Thrombin Prothrombin Fibrinogen Fibrin Blood Clotting

  11. Bibliography • Argyle, B. "Physiology of Gas Exchange." Blood Gas Text. 1996. Mad Scientist Software. 27 Oct. 2008. • Rice, Daniel. "Gas Exchange In Humans." The Biology 2201. 27 Oct. 2008 <http://www.cdli.ca/~dpower/resp/exchange.htm>. • Ritchison, Gary. Human Physiology - Respiration. 27 Oct. 2008 <http://people.eku.edu/ritchisong/ritchiso//301notes6.htm>. • Starr, Cecie, and Ralph Taggart. Biology : The Unity and Diversity of Life. Belmont: Brooks/Cole, 2003. • "Gas Exchange."  17 February 2005.  HowStuffWorks.com. <http://health.howstuffworks.com/adam-200022.htm>  28 October 2008. • http://www.skanschools.org/HS/library/Norris/ch.42%20notes.ppt

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