Inspiration- Active process (requires energy)
- Intercostal muscles and diaphragm contract.
- The diaphragm is flat.
- The thorax increases therefore there is less pressure in the lungs causing airflow into the lungs
- The ribcage moves upwards and outwards
Expiration- Passive process (doesnt require energy)
- Intercostal muscles and diaphragm is relaxed
- The diaphragm is curved
- The thorax volume decreases causing more pressure in the lungs
- Air is forced out the lungs
- The ribcage moves downwards and inwards
Comments
No comments have yet been made