Ventricle and atria relaxing Flashcards
1
Q
The ventricles and atria are both relaxed
The pressure in the ventricles drops below that in the……………
forcing what to happen
A
aorta and pulmonary artery, forcing the SL valves to close
2
Q
The atria continue to
A
fill with blood
Blood returns to the heart via the vena cava and pulmonary vein
3
Q
Pressure in the atria rises above that in the …………….., forcing
A
ventricles
the AV valves open
4
Q
After the pressure rises in the atria higher than that in the ventricle how does blood flow?
A
passively into the ventricles without need of atrial contraction
5
Q
After ventricle and atria relax then cycle begins with what again………
A
atria contraction
6
Q
In atria and ventricular relaxation what valves are open and which are closed
A
atrioventricular-open
semilunar- closed
7
Q
A
