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11 Cards in this Set
- Front
- Back
What is the name of the gas exchange systems in fish? |
A counter-current system. |
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There is a ........ concentration of oxygen in ......... than in air. So fish have a special ......... to get enough of it. |
1. lower 2. water 3. adaptation |
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Explain the counter-current system in fish. Give details on the structure of the system. |
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How are fish gills ventilated in bony fish? |
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What do insects use to exchange gases? |
Tracheae. |
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What are trachaea? |
Microscopic air-filled pipes which insects use for gas exchange. |
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Air moves into the tracheae through pores on the insect's surface called .......... |
spiracles |
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What direction does oxygen move in the concentration gradient (gas exchange in insects)? |
Oxygen moves down the concentration gradient towards the cells. |
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What direction does carbon dioxide move in the concentration gradient? |
Carbon dioxide from the cells move down its own concentration gradient towards the spiracles to be released into the atmosphere. |
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Explain how the tracheae branch off (inside the insect). What does this structure do? |
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What do insects do to change the volume of their bodies to move air in and out? What do larger insects do when flying to move air in and out? |
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