Which of the following is correct about the cardiac cycle?

Practice question

Question

Which of the following is correct about the cardiac cycle?

Options

Choose one · Correct answer highlighted

The cardiac cycle lasts approximately 2 seconds. Systole refers to heart muscle relaxation. The cardiac cycle consists of systole and diastole. Correct Diastole occurs when the heart contracts.

Explanation

The cardiac cycle consists of systole (contraction) and diastole (relaxation) of the heart chambers.

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