Common Pleas Court Comprehensive Guide
Learn about gas exchange for your OCR A Level Biology course. Find information on fish and insect gas exchange systems. Fish exchange gases through their gills rather than lungs. The gills are composed of gill filaments that contain capillaries. Water is taken. Gaseous exchange in fish takes place between the gills and the surrounding water. The gills are located in an opercular. Some fish are air breathing, using lungs, swim bladder, skin or lips for gaseous exchange. Hypoxia, hypercapnia,. Fish use gills for gas exchange, allowing them to extract oxygen from water efficiently. Since water is denser than air and contains less.
As water flows over the gill filaments, oxygen is absorbed into the blood, and carbon dioxide is expelled back into the.
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