1. RESPIRATORY PHYSIOLOGY

2. Pulmonary Ventilation  Getting air in and out of lungs.

3. Muscles  Mainly the diaphragm.  External Costals: Outside of ribs, breath in.  Internal costals: Between ribs, breath out.

4. Costals

5. Inspiration  Inhaling or breathing in, 4 basic steps.

6. Inspiration  1. Message to breath sent from the medulla oblongata to breathing muscles.

7. Inspiration  2. Muscles Contract.

8. Inspiration  3. Thoracic cavity gets bigger!

9. Inspiration  4. Air pushes and/or rushes in and fills the lungs.

10. Expiration  Breathing out, consists of 4 basic steps.

11. Expiration  1. Medulla oblongata stops sending message.

12. Expiration  2. Muscles relax.

13. Expiration  3. Thoracic cavity decreases in size, air pressure increases.

14. Expiration  Air is pushed out of the lungs.

17. Cardiopulmonary resuscitation  AKA: CPR  Restores circulation and ventilation.

18. FLEX THE PECS:  Activity time.