Assertion (A): The muscular walls of ventricles are thicker than auricles.
Reason (R): This helps in preventing the backflow of blood.
Ventricles pump oxygenated blood into various organs with high pressure. Hence they need thicker muscular walls than atria do.
Valves prevent backflow of blood.
- The assertion is True
- The reason is False
So, the correct answer is (c)