Master Of Medicine

Typical intercostal nerves -Supply only the intercostal space

1. 1st and 2nd -Atypical
2. 3,4,5,6-Typical intercostal nerves
3. Lower 6 intercostal nerves supply abdomen also- so they are atypical

Movements in thorax

1. Bucket handle movement- Change in transverse diameter
2. Pump handle movement of sternum- Change in AP diameter
3. Piston movement of diaphragm-Vertical diameter