The Breathing System
- Created by: Jo Wells
- Created on: 07-04-13 17:19
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- The Breathing System
- lungs are in the thorax (top part of body)
- is separated from lower part of body (abdomen) by the diaphragm
- air we breathe goes through the trachea
- this splits into 2 tubes called bronchi, with 1 going to each lung
- they then split into progressively smaller tubes called bronchioles
- these finally end with alveoli, where gas exchange takes place
- they then split into progressively smaller tubes called bronchioles
- this splits into 2 tubes called bronchi, with 1 going to each lung
- ventilation - breathing in and out
- breathing out
- intercostal muscles relax
- diaphragm relaxes
- moves up
- thorax volume decreases
- increases press, forcing air out
- thorax volume decreases
- ribcage and sternum drop in and down
- breathing in
- intercostal muscles contract
- diaphragm contracts
- flattens out
- thorax volume increases
- decreases pressure, drawing air in
- decreases pressure, drawing air in
- ribcage and sternum goes up and out
- breathing out
- artificial ventilators help people to breathe
- ventilators are machines that move air into or out of the lungs
- most work now by pumping air into the lungs, expanding the ribcage
- when they stop pumping, the ribcage relaxes and pushes air out of the lungs
- most work now by pumping air into the lungs, expanding the ribcage
- this doesn't interfere with blood flow unlike some more old fashioned machines
- most work now by pumping air into the lungs, expanding the ribcage
- when they stop pumping, the ribcage relaxes and pushes air out of the lungs
- could cause damage in the lungs if they can't cope with the artificial air flow
- most work now by pumping air into the lungs, expanding the ribcage
- ventilators are machines that move air into or out of the lungs
- lungs are in the thorax (top part of body)
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