Cardiac Cycle

Question 1

What happens to the pressure in the left ventricle when the mitral valve closes?

Answer 1

It increases sharply

Question 2

What is the volume of blood left in the left ventricle following diastole called?

Answer 2

End Diastolic volume

Question 3

A stenosis of the aortic or pulmonary valves would produce a murmur in what phase?

Answer 3

Systole

Question 4

A stenosis of the mitral or tricuspid valves would produce a murmur in what phase?

Answer 4

Diastole

Question 5

What produces the dicrotic notch?

Answer 5

When blood is pushed out of the aorta, the elastic energy increases, the energy causes a small blip on the graph

Question 6

What causes the ‘a’ wave?

Answer 6

Atrial contraction

Question 7

What causes the ‘c’ wave?

Answer 7

The mitral valve pushing into the atrium, gives a gradual increase in pressure

Question 8

What causes the ‘v’ wave?

Answer 8

Gradual increase in pressure due to continuing venous return - this stops as soon as the mitral valve opens