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What else can I help you with?
When atria relax ventricles do what?
When relaxed, the atria expand, and then the ventricles contract.
Do atria contract before the ventricles?
Yes, atria contracts before the ventricles.
What happens when the atria contract?
it is cool
What valves open when the atria contract?
tricuspid valve
What node triggers an im pulse that causes both atria to?
the atriventriculart node causes both atria to contract
What do the atria do at the same time?
The atria contract simultaneously to push blood into the ventricles. This coordinated contraction ensures efficient filling of the ventricles with blood before they contract to pump blood out to the rest of the body.
Which chambers contract during the heart beat LUB?
The atria.
When the atria contract the blood is forced into the?
The blood is squeezed into the ventricles.
Which valves lie between the atria and ventricles and prevent bloof from flowing back into the atria when the venttricals contract?
semilunar valves
What do both atria do at the same time?
They both contract at the same time.
What makes the valves between atriums open and close?
There are no valves between the atria. The valves between the atria and ventricles close when the ventricles contract.
When do the atria contact?
The atria contract during the cardiac cycle's atrial systole phase, which occurs just before the ventricles contract. This contraction helps push blood from the atria into the ventricles, completing the filling of the ventricles before they contract during ventricular systole. Atrial contraction is facilitated by electrical signals from the sinoatrial (SA) node, ensuring synchronized heart function.
