Cardiac Cycle

Question 1

Three instances when atrial pressure increases

Answer 1

1 . a wave - atrial contraction

2. c wave - contraction of ventricle
3. v wave - venous blood going to aorta

Question 2

Phase of cardiac cycle that occurs during the distal third of diastole, preceded by p wave, presence of a wave.

Answer 2

Atrial contraction

Question 3

Phase of cardiac cycle that is preceded by QRS complex, presence of c wave, equal ventricular volume since the ventricular pressure < aortic pressure.

Answer 3

Isovolumetric contraction

S1 can be heard here

Question 4

Phase of cardiac cycle where atrial filling begins, ventricular pressure > aortic pressure, opening of semilunar valves, rapid decrease in ventricular volume

Answer 4

Rapid Ventricular Ejection

Question 5

This phase of cardiac cycle is where T wave occurs

Answer 5

Reduced ventricular ejection

Question 6

Aortic valve closes during this portion of the ECG

Answer 6

Twave

Question 7

This phase of cardiac cycle is preceded by T-wave, presence of v wave, ventricular pressure > atrial pressure, associated with opening of mitral valve

Answer 7

Isovolumetric relaxation

Question 8

This phase is where the AV valve open, and associated with the rapid increase of the ventricular volume

Answer 8

Rapid Ventricular Filling

Question 9

This is the longest phase of the cardiac cycle associated with decreased ventricular volume

Answer 9

Reduced ventricular filling (diastasis)

Question 10

Cite the 7 phases of the cardiac cycle in sequence

Answer 10

1. Atrial Contraction
2. Isovolumetric Contraction
3. Rapid Ventricular Ejection
4. Reduced ventricular Ejection
5. Isovolumetric relaxation
6. Rapid ventricular filling
7. Reduced ventricular filling