1. Do Now:
Work with your elbow buddy Partner 1: Blow up balloon using 1 normal breath. Partner 2: Measure circumference (distance around middle). Compare with your table. Now do the same with a BIG breath.

2. The Respiratory System
Why do astronauts wear space suits and carry oxygen when they go out in space?
Why do deep sea divers take oxygen with them on a dive?

3. The Respiratory System Functions
The respiratory system moves oxygen from the outside environment into the body.
It also removes carbon dioxide and water from the body.
Remember: respirad
means breathing
Oxygen
Carbon Dioxide

4. Respiration: What is it?
Respiration is the process by which oxygen and glucose (sugar) go through a chemical reaction inside cells. The chemical reaction releases energy that the cell uses.
oxygen + sugar
Energy and carbon dioxide

5. Do Now: Describe what is happening in this picture.
Use these terms: lungs, arteries, veins, blood cells, body cells, heart, oxygen and carbon dioxide. Use scientific vocabulary.

6. What is air we breathe made of?
Air is made up of a mixture of gases.
21% oxygen
78% nitrogen
1 % carbon dioxide, helium and other gases.
What is air mostly?

7. Do Now: On p. 28 of your packet, sequence the pathway of air as it flows from outside the body to the alveoli

8. Do Now: On p. 18 of your packet, sequence the pathway of air as it flows from outside the body to the alveoli.
As air travels from outside, it travels through the nose, pharynx, larynx, trachea and bronchi and bronchioles to the alveoli
resp system w test
Resp system animation
(pharynx)
start at 9min

9. Breathing – it is not the same as respiration
Breathing is moving air in and out of your lungs.
one direction

10. The diaphragm

11. The alveoli
The alveoli are tiny air sacs in the lungs

12. Gas Exchange in the Lungs
kids health
gas exchange

13. Inside the Lungs
(c)The surface of the alveoli

14. anatomy of breathing

15. AnatomyofBreathing