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 upper thorax / chest Here, oxygen and carbon dioxide are exchanged – oxygen is needed for life and carbon dioxide is got rid of when we breathe out.

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 Alveoli The outside of the alveoli is covered with tiny blood vessels. Oxygen makes its way into thousands of special air sacs collectively called the ALVEOLI.

9. Copyright of www.makemegenius.com, for more videos,visit us. The Alveolus One of these alveoli is called the ALVEOLUS. This is where the oxygen is transferred into the blood and carbon dioxide moves out of the blood. If all these alveoli flattened and spread out onto the floor, they would cover an area the size of a tennis court!

10. Copyright of www.makemegenius.com, for more videos,visit us. Comparing inhaled and exhaled air What are the big differences between inhaled and exhaled air? How could you test for these? There is another difference…… …… water vapour. Inhaled Air Nitrogen (78%) Oxygen (20.71%) Carbon Dioxide (0.1%) Other Exhaled Air Nitrogen (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. Thanks Submitted by Harshit Pandey St. 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’s presentation(ppt) please send it on info@makemegenius.com

15. Copyright of www.makemegenius.com, for more videos,visit us. If you also want to share your own or your kid’s presentation(ppt) please send it on info@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 “