Second phase Flashcards
1
Q
What is the second phase?
A
Isovolumetric contraction
2
Q
What happens in the chambers in the second phase?
A
The atria relax and the ventricles contract.
3
Q
What happens to the pressure in the second phase?
A
Atrial pressure decreases and arterial trunk pressure increases.
4
Q
What happens to the valves in the second phase?
A
AV valves closed, semilunar valves closed.
5
Q
Last thing about second phase?
A
Shutting of the AV valves produces “lub” sound
