The diagram shows the heart of a bird.

What is the function of the structure labeled Y? to keep oxygen-rich blood and oxygen-poor blood flowing to filter waste materials from oxygen-poor blood to filter waste materials from oxygen-rich blood to keep oxygen-rich blood and oxygen-poor blood separate

The diagram shows the heart of a bird What is the function of the structure labeled Y to keep oxygenrich blood and oxygenpoor blood flowing to filter waste mate class=