Why is high blood pressure damaging to the heart?
A. With high blood pressure, the blood is more viscous and harder to pump.
B. The heart rate slows down to dangerously low levels if blood pressure is too high.
C. Due to increased afterload, the left ventricle must contract more forcefully to expel the same amount of blood.
D. Sodium concentration increases during high blood pressure and is toxic to the myocardium.
Answer: C. Due to increased afterload, the left ventricle must contract more forcefully to expel the same amount of blood.
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