The lungs
- Created by: RajeevSood
- Created on: 12-05-16 19:35
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- The lungs
- Ventilating the lungs
- What happens in the lungs when we inhale?
- The intercostal muscles between the ribs and diaphragm contract
- The volume of the thorax increases
- The pressure in the thorax decreases and air is drawn in
- The volume of the thorax increases
- The ribcage moves out and upwards and the diaphragm flattens
- The volume of the thorax increases
- The pressure in the thorax decreases and air is drawn in
- The volume of the thorax increases
- The intercostal muscles between the ribs and diaphragm contract
- What happens in the lungs when we exhale?
- The intercostal muscles between the ribs and diaphragm relax
- The volume of the thorax decreases
- The pressure in the thorax increases and air is drawn out
- The volume of the thorax decreases
- The intercostal muscles between the ribs and diaphragm relax
- What happens in the lungs when we inhale?
- Artificial breathing aids
- The iron lung
- A person would lie on their chest
- The person would be sealed in a large metal cylinder
- When air gets drawn out of the cylinder the person's chest would move out
- The person would subsequently breathe in
- The vacuum formed inside the cylinder would create a negative pressure
- When air gets pumped back in to the cylinder pressure would be created on the chest
- This would force air out of the person's lungs
- When air gets pumped back in to the cylinder pressure would be created on the chest
- The vacuum formed inside the cylinder would create a negative pressure
- The person would subsequently breathe in
- When air gets drawn out of the cylinder the person's chest would move out
- The person would be sealed in a large metal cylinder
- A person would lie on their chest
- Positive pressure aids
- These force measured amounts of air into the lungs
- They can be linked to computers for control
- They are often smaller and easier to manage in the home
- The iron lung
- Ventilating the lungs
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