1. Mechanics of Breathing

2. The Respiratory System

3. Mechanics of Breathing

4. Inspiration-Rest

5. Expiration-Rest

6. Inspiration- Exercise
Recruit skeletal muscles to increase volume of thoracic cavity
Sternocleidomastoid
Scalene
Pectorals

7. Expiration- Exercise This now becomes Active
Recruit muscles to compress the chest faster and with more force.
Internal Intercostals
Abdominals

8. Exam Question
Explain the mechanics of breathing for inspiration. Explain how this changes during exercise.
Explain the mechanics of breathing for expiration. Explain how this changes during exercise