Answer to Question #105041 in Human Anatomy and Physiology for Vidhi singh

Question

Draw the labbled diagram for the teleost Gill. How does counter current flow of the blood and water facilitate gas exchange in comparison to concurrent flow?

Answer 1

Countercurrent oxygen exchange means the blood flows through the gills in the opposite direction as the water flowing over the gills. The maximum amount of oxygen that the blood could pick up would be only half of the total amount of oxygen in the water.