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Cyfarthfa B2 lungs
CyfarthfaB2 lungs
| Question | Answer |
|---|---|
| Scientific name for windpipe | Trachea |
| Tubes that carry air into right or left lung | Bronchi |
| Narrow tubes carrying air to alveoli | Bronchioles |
| Tiny air sacs where gas exchange takes place | Alveoli |
| Bones that protect the lungs | Ribs |
| Muscles in between ribs | Intercostal muscles |
| Large muscle underneath the lungs | Diaphragm |
| Membranes between the lungs and rib cage | Pleural membranes |
| Reason for the folded shape of alveoli | Large surface area |
| Reason for moist lining of alveoli | Gases diffuse more quickly when dissolved |
| Adaptation of alveoli to give a short diffusion distance | Walls only one cell thick |
| How is a maximum concentration gradient maintained between alveoli and blood? | Constant movement of air and blood |
| What happens to intercostal muscles during inhalation? | Contract |
| Movement of ribcage during inhalation? | Up and out |
| Volume of thorax during inhalation | Increases |
| Pressure inside thorax during inhalation? | Decreases |
| What happens to intercostal muscles during expiration? | Relax |
| Movement of ribcage during exhalation? | Down and in |
| Volume of thorax during exhalation | Decreases |
| Pressure inside thorax during expiration | Increases |
| Position of diaphragm during inspiration | Lies flat |
| Position of diaphragm during expiration | Dome shaped |
| Structures represented by the glass y tube in the bell jar model? | Trachea and bronchi |
| Structures represented by balloons in bell jar model? | Lungs |
| Cells that produce mucus in the airways | Goblet cells |
| Cells with structures on their surface that move mucus out of the airways | Ciliated epithelial cells |
| Limitation of bell jar model | Doesn't show movement of ribcage |
| Addictive chemical in cigarette smoke | Nicotine |
| Condition where the elastic tissue of alveoli is damaged so they lose their special shape | Emphysema |