The walls of the ventricles are thicker than the atria because ventricles must pump blood out of the heart, whereas atria only receive blood and pass it to the ventricles.
The walls of the ventricles are thicker than the atria because ventricles must pump blood out of the heart, whereas atria only receive blood and pass it to the ventricles.
| Front | Explain why the walls of ventricles are thicker than the walls of the atria. |
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| Back | Walls of ventricles vs atria:
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