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Lec1

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  • 1. Copyright of www.makemegenius.com, for more videos ,visit us.www.makemegenius.com– Full of ingredients to make your child a genius.“Don’t make me read, make me understand “
  • 2. Copyright of www.makemegenius.com, for more videos ,visit us.Being Healthy
  • 3. Copyright of www.makemegenius.com, for more videos ,visit us.The Respiratory System• Gas exchange happens in the lungs.• You have 2 lungs, situated in your upperthorax / chest• Here, oxygen and carbon dioxide areexchanged – oxygen is needed for life andcarbon dioxide is got rid of when we breatheout.
  • 4. Copyright of www.makemegenius.com, for more videos ,visit us.How do we breathe?Mouth Windpipe/trachea bronchi bronchioles alveoli blood
  • 5. Copyright of www.makemegenius.com, for more videos ,visit us.Inhalation(When we breathe in we inhale)
  • 6. Copyright of www.makemegenius.com, for more videos ,visit us.Exhalation(When we breathe out we exhale)
  • 7. Copyright of www.makemegenius.com, for more videos ,visit us.Exchanging gases
  • 8. Copyright of www.makemegenius.com, for more videos ,visit us.The AlveoliThe outside of the alveoli is covered with tiny bloodvessels.Oxygen makes its way into thousands of special airsacs collectively called the ALVEOLI.
  • 9. Copyright of www.makemegenius.com, for more videos ,visit us.The AlveolusOne of these alveoli is called the ALVEOLUS.This is where the oxygen is transferred into the blood and carbon dioxidemoves out of the blood.If all these alveoliflattened andspread out ontothe floor, theywould cover anarea the size of atennis court!
  • 10. Copyright of www.makemegenius.com, for more videos ,visit us.Comparing inhaled and exhaled airWhat are the big differences between inhaled and exhaled air?How could you test for these?There is another difference…… …… water vapour.Inhaled AirNitrogen (78%)Oxygen (20.71%)Carbon Dioxide (0.1%)OtherExhaled AirNitrogen (75.5%)Oxygen (14.6%)Carbon Dioxide (4%)Other
  • 11. Copyright of www.makemegenius.com, for more videos ,visit us.Lets take a closer look (avi)
  • 12. Copyright of www.makemegenius.com, for more videos ,visit us.Backup of as wmv file
  • 13. Copyright of www.makemegenius.com, for more videos ,visit us.ThanksSubmitted byHarshit PandeySt. johns Public School
  • 14. Copyright of www.makemegenius.com, for more videos ,visit us.If you also want to share your own or your kid’spresentation(ppt) please send it oninfo@makemegenius.com
  • 15. Copyright of www.makemegenius.com, for more videos ,visit us.If you also want to share your own or your kid’spresentation(ppt) please send it oninfo@makemegenius.com
  • 16. Copyright of www.makemegenius.com, for more videos ,visit us.www.makemegenius.com– Full of ingredients to make your child a genius.“Don’t make me read, make me understand “

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