- Created by: harri39
- Created on: 15-02-17 20:46
- Ventilation is the movement of air into and out of the lungs.
- Air passes through the mouth/nose → trachea → bronchi → bronchioles → alveoli.
- The diaphragm and the intercostal muscles are used in ventilation.
- Breathing in or inhaling means the diaphragm and intercostal muscles contract.
- Breathing out or exhaling means the diaphragm and intercostal muscles relax.
What does Ventilation mean?
Ventilation means breathing in and out.
What does Diaphragm mean?
A large sheet of muscle that separates the lungs from the abdominal cavity.
The process of Ventilation:
1 - Air is taken through the mouth/nose.
2 - Intercostal muscles contract, expanding the ribcage.
3 - Pressure decreases in the lungs so air is able to be pushed in.
4 - Diaphragm contracts, pulling downwards.
1 - Diaphragm relaxes and moves up.
2 - Pressure increases in the lungs so air is able to be pushed out.
3 - Intercostal muscles relax, allowing the ribcage to…