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After the blood pumps from the atria to the ventricles, during systole.
Systole
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∙ 12y ago
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How much blood from the aorta passes into the ventricles before the atria contract?
lots :)
What are the electrical impulses in the heart that are relayed to the ventricles by what?
A junction box, also known as the AV node, is how electrical impulses in the heart are relayed to the ventricles. The ventricles help make the muscle contract and then pump the blood.
What happens if the papillary muscles fail to contract?
If the papillary muscles fail to contract the valves will prolapse. The papillary muscles are located in the ventricles and contract to prevent prolapse.
What carries electrical impulses across the heart and causes the ventricles contract?
SA node.
As heart ventricles contract and then relax blood pressure inside of arteries change from?
systolic to diastolic
What makes ventricles contract?
Purkinje Fibers actually makes the ventricles contract.
What happen after depolarization of the ventricles?
The ventricles contract.
When atria relax ventricles do what?
When relaxed, the atria expand, and then the ventricles contract.
Do the ventricles contract at the apex or at the base of the heart?
Not really sure what you mean by the base, the ventricles contract from the Apex (which is at the bottom) upwards.
Why is it an advantage for the ventricles to contract from the bottom?
The pulmonary artery and the aorta lead upward and away from the ventricles. Since the ventricles contract from the bottom, blood is more efficiently pushed out of the heart.
Do atria contract before the ventricles?
Yes, atria contracts before the ventricles.
When doe the ventricles contract?
Systole
Where is blood pumped when ventricles contract?
Into the heart
When the ventricles get very full it does what strongly?
contract
When the ventricles contract blood flows from the right ventricles to what?
The right ventricle pumps blood to the lungs.
What contract together to pump blood?
The ventricles contract to pump blood out of the heart.
Do ventricles contract together or does one follow another?
They normally contract together.
