Inhaled Exhaled Air

1. Inhaled & Exhaled Air D. Crowley, 2007

2. Inhaled & Exhaled Air To know and understand the difference between inhaled and exhaled air

3. Breathing System What is the breathing system used for? The breathing system is used by the body to get the oxygen needed for respiration It is also use to get rid of the waste product of respiration, the gas carbon dioxide

4. Breathing Movements of the ribs, rib muscles and diaphragm allow air into and out of the lungs: this is called breathing or ventilation When we breathe in, we inhale When we breathe out, we exhale

5. Inhaled & Exhaled Breathing in is also known as inhalation - when you inhale you breathe in air, including oxygen, into your lungs Breathing out is also known as exhalation - when you exhale you breathe out the contents of our lungs and getting rid of the waste gas carbon dioxide

6. Inhalation (breathing in)

7. Exhalation (breathing out)

8. Differences What differences do you expect between inhaled and exhaled air? How could you test for these differences? Set up the following experiment: - Get 1 boiling tube, and fill it 1/3 of the way up with limewater Using a delivery tube, exhale down the tube into this limewater (limewater goes cloudy in the presence of CO2) With a cold mirror breathe onto it (you will notice a liquid condenses on it) - using cobalt chloride paper test to see if this is water (cobalt chloride goes from blue to pink in the presence of water)

9. Differences Inhaled & Exhaled Air

10. Respiration The reason we exhale less oxygen but much more carbon dioxide is because of aerobic respiration: -

11. Breathing

12. Breathing