Cardiac Cycle Phases

Question 0

Phase 1: ventricular filling

Answer 0

Mid to late diastole

Blood enters passively thru AV valves into ventricles

Question 1

Cardiac cycle

Answer 1

All events associated with flow thru the heart during a single heart beat

Question 2

Phase 2: isovolumetric contraction

Answer 2

Beginning of systole
All valves closed.
No blood moving
Ventricles begin to contract

Question 3

Phase 3: ventricular ejection

Answer 3

SL valves open for ejection

Ending ejection: End of systole and beginning of diastole

Question 4

Phase 4: isovolumetric relaxation

Answer 4

Early diastole
All valves closed
Atrial pressure exceeds pressure in ventricle, AV valves open and begins phase 1.

Question 5

Diastole and systole

Answer 5

65% of the time in diastole
Gives heart enough time to fill with blood
Prevents fatigue

Question 6

Diastolic pressure

Answer 6

Aortic pressure reaches a minimum

Question 7

Systolic pressure

Answer 7

Aortic pressure reaches a maximum

Question 8

MAP

Answer 8

Avg aortic pressure during cardiac cycle

Represents driving force that pushes blood thru systemic circuit

Question 9

Pulse pressure

Answer 9

Systolic - diastolic

Question 10

MAP

Answer 10

Diastolic + (1/3)(PP)