Which of the Following Statements Concerning the Cardiac Cycle Is

question 8

Multiple Choice

Which of the following statements concerning the cardiac cycle is true?

• A) Blood enters the right and left atria only during diastole.
• B) Most ventricular filling occurs before the atria contract.
• C) During ventricular systole, the AV valves open.
• D) The semilunar valves remain closed throughout ventricular systole.
• E) Most of end-diastolic volume comes from active filling.

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