The three-chambered heart of frogs reduces mixing of oxygenated and unoxygenated blood because of the separation of atrial inflow and outflow.
"Although anurans have a three-chambered heart, little mixing of oxygenated and unoxygenated blood occurs because of the separation of atrial inflow and outflow." (Fowler and Miller 2003:22)
Learn more about this functional adaptation.
- Fowler, ME; Miller, RE. 2003. Zoo and Wild Animal Medicine. Philadelphia: W.B. Saunders Co.
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