BRAINCAKEGas Exchange in Fish
All gas exchange systems must supply oxygen to respiring tissues and remove carbon dioxide produced by respiration rapidly enough.
In fish the distance between the environment and the individual cells of the tissues is relatively short.
Mass transport achieves efficient transport of gas over large distances, requires energy and does not occur across tissue barriers. Diffusion achieves gas transport across barriers.
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
Key terms in this lesson
- diffusion
- The net movement of molecules or ions from a region of higher concentration to a region of lower concentration, down a concentration gradient.
More in Exchange Surfaces and Breathing
- Gas Exchange in Unicellular Organisms
- Gas Exchange in Insects
- Diffusion Gradient
- Mass Transport
- Increasing the Rate of Diffusion
- Limitations of the Tracheal System
- Structure of the Gills
- Counter Current Exchange
All 24 lessons in Exchange Surfaces and Breathing · All OCR AS-level Biology topics