If You Were to Design a Countercurrent Exchange Respiratory System

question 16

Multiple Choice

If you were to design a countercurrent exchange respiratory system in fish,which of the following would not be expected?

• A)In the front (anterior)portion of the gill,the amount of oxygen in the gills is lower than the water.
• B)Water travels over the gills from anterior to posterior.
• C)In the back (posterior)portion of the gill,the amount of carbon dioxide in the gills is higher than the water.
• D)Blood flows through the gills from anterior to posterior.

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