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.

Question

Quizplus · Accepted Answer

In a countercurrent exchange system, blood flows in the opposite direction to water, so blood would flow from posterior to anterior, not anterior to posterior.

If You Were to Design a Countercurrent Exchange Respiratory System