1. Gas Exchange at a Cellular Level By Holly 2 and Aaron

2. O 2 and CO 2 in Blood G Oxygen is carried by hemoglobin. G Dissolved in the plasma. G Oxygen is carried by hemoglobin. G Dissolved in the plasma.

3. Respiration G Process of delivering O 2 to cells and carrying away CO 2. G Includes: G gas exchange in lungs G circulation of gases through bloodstream G transfer of gases at cellular level G Process of delivering O 2 to cells and carrying away CO 2. G Includes: G gas exchange in lungs G circulation of gases through bloodstream G transfer of gases at cellular level 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 G air goes into lung sacs G O 2 from the air enters the blood G CO 2 exits from the blood into the air G blood reaches the tissues G O 2 diffuses into cells G CO 2 enters the blood G blood circulates back to the lungs G air goes into lung sacs G O 2 from the air enters the blood G CO 2 exits from the blood into the air G blood reaches the tissues G O 2 diffuses into cells G CO 2 enters the blood G blood circulates back to the lungs http://catalog.nucleusinc.com/imagescooked/2672W.jpg

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

7. Path of O 2 and CO 2 G Partial Pressure is exerted by a certain gas among a mixture of other gasses. G Partial pressure is a measure of how much of that gas is present in a mixture. G Gas diffuses in the direction with the least the partial pressure. G Simple Diffusion - Oxygen diffuses through the membrane and plasma, and is taken up by the RBC (Red Blood Cells.) G Partial Pressure is exerted by a certain gas among a mixture of other gasses. G Partial pressure is a measure of how much of that gas is present in a mixture. G Gas diffuses in the direction with the least the partial pressure. G Simple Diffusion - Oxygen diffuses through the membrane and plasma, and is taken up by the RBC (Red Blood Cells.) http://kentsimmons.uwinnipeg.ca/cm1504/Image 132.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 G When a blood vessel is damaged a clot forms. G Clotting can prevent gas exchange. G A lack of hemoglobin can hinder cellular respiration. G Hemophilia is caused by a lack of hemoglobin G When a blood vessel is damaged a clot forms. G Clotting can prevent gas exchange. G A lack of hemoglobin can hinder cellular respiration. G Hemophilia is caused by a lack of hemoglobin http://media-2.web.britannica.com/eb-media/28/98328-004-5514AFAC.jpg

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

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