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Which phase in cardiac cycle is systolic pressure?
Blood flows into the relaxed atria while the ventricles contract. <rephrased> The ventricles contract, carrying blood into the aorta, and blood flows into the relaxed atria.
Who comes first atrial systole or ventricle systole?
Atrial systole -- The atrium contracts, then the ventricle.
When atria relax ventricles do what?
When relaxed, the atria expand, and then the ventricles contract.
How does atria and ventricle work together?
the atria and ventricle work together as a team - the atria fill with blood, then dump it into the ventricle. The ventricle then squeeze, pumping blood out the heart, while the ventricle are squeezing, the atria refill and gets ready for the next contraction. so when the blood gets pumped ,how does it know which way to go?
What is a relaxed heart?
Called relaxation period of heart. when all 4 valves are closed, and the blood is filling the 2 atria through the vein.
Why are atria so thin-walled?
The atria does not need to be very thick because all it needs to do is fill up with blood so that the ventricles can pump out the blood. The ventricular walls are thick so that they can properly pump out blood to the needed areas.
Does atria pump blood to the body or lungs?
the atria pump blood only to the ventricles.
What does atria pump blood to the body or the lungs?
the atria only pump blood to the ventricles
What carry blood to the atria?
Veins carry blood to the atria. In contrast, arteries carry blood away from the ventricles.
What chambers of the heart function to receive blood from veins?
Atria receive blood from the veins.
What are the atria for?
The atria allow the blood to move from the body into the heart.
What happens during complete cardiac diastole?
* Atria are relaxed * Ventricles are relaxed * Semilunar valves are closed * Atrioventricular valves are open During this phase the blood moves passively from the venous system into the ventricles ( about 80 % of blood fills the ventricles during this phase.
