| - A. B. C. D. | All 4 cardiac valves are closed and all 4 chambers are relaxed during this phase. |
| - A. B. C. D. | The maximum amount of blood is in the ventricles at the end of this phase. |
| - A. B. C. D. | The pressure in the ventricles is higher than in the atria, but lower than in the arteries, during this phase. |
| - A. B. C. D. | The semilunar valves are open and the AV valves are closed during this phase. |
| - A. B. C. D. | The atria contract at the end of this phase. |
| - A. B. C. D. | The pressure in the ventricles is higher than the pressure in both the atria and the arteries during this phase. |
| - A. B. C. D. | Systole begins with this phase. |
