atrial contraction Flashcards
1
Q
The walls of the atria contract what happens to volume and pressure
A
Atrial volume decreases
Atrial pressure increases
2
Q
The atria contraction causes the pressure to ….. that of the ventricles
and what happens to the blood
A
rises above that in the ventricles, forcing the atrioventricular (AV) valves open
Blood is forced into the ventricles
3
Q
There is a slight increase in ventricular …………and chamber …………..as the ventricles receive the blood from the atria
A
volume and pressure
4
Q
what action by the ventricles coincides the atrial contraction
A
Ventricle relaxing
5
Q
Which valves are open and which are closed in atria contraction
A
Atrioventricular open
semi lunar closed
6
Q
A
