1. Breathing Process

2. Main Function Gas exchange - Inhale Oxygen / Exhale Carbon Dioxide
Diaphragm =
Major muscle of breathing
Contracts during inhaling
Relaxes during exhaling

3. Inhaling Oxygen enters trachea & inflates lungs Requires energy
Intercostal muscles contract to increase lung capacity; Diaphragm contracts

4. Exhaling Carbon Dioxide is forced out from the lungs Passive
Intercostal muscle relax; Diaphragm relaxes, moves upward & pushes air out
Only requires energy when a respiratory disease is present

5. Chest Tube Hollow, flexible tube that acts as a drain Pt. Conditions
Post-op
Pneumothorax
Fluid in the lung