What causes Angina to occur?

What causes Angina to occur?
  1. Due to conditions that affect the blood flow
  2. Due to the state of heart when it is pumping blood effectively
  3. Due to cardiac arrest
  4. Due to congestion of the lungs

Solution

Angina occurs due to conditions that affect the blood flow and prevent enough oxygen from reaching the heart muscle.

Asked in: NCERT

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