Zoology Question
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Which statement regarding the mammalian heart is correct?
- Blood arrives at the heart via the ventricles.
- In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs.
- Oxygen-loaded blood moves only through the right side of the heart.
- When the right atrium contracts, it forces blood into the left atrium.
- Blood is pumped from the heart via the atria.