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The AV valves open when the blood pressure exerted on their atrial side is greater than that of the ventricle side. This will happen when blood returning to the heart fills the atria and puts pressure against the valve.
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∙ 9y ago
Wiki User
∙ 14y agoWhen intraventricular pressure rises the AV valves close.
Wiki User
∙ 11y agoThe AV valves open when atrial pressure is highest. And they are closed during ventricular systole.
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∙ 14y agowhen intraventricular pressure rises
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∙ 13y agoDuring isovolumetric contraction
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∙ 13y agoopen
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Are all valves closed during isovolumetric contraction?
Yes
During the isovolumetric relaxation phase of the cardiac cycle the AV valves are and the semilunar valves are?
closed and closed
During ventricular systole are AV valves closed?
yes during ventricular systole AV valves are closed.
When installing a cylinder head are all valves supposed to be closed?
Yes, until there is a rocker arm or camshaft installed to press valves open.
How are engine valves closed?
With springs.
How do you establish that the intake and exhaust valves are closed?
The best way to tell if the valves are closed is to observe the rocker arms. When they are both at the top of their travel, valves are closed. Feel the rocker arms and try to move them, if they move their at the top of their travel.
When are semi-lunar valves open?
Semilunar valves are open when the blood is being pumped. The AV valves are closed when the semilunar valves are open.
Do you need a safety valve on an open system?
Safety valves are required on all closed pressure vessels.
Should the shut of valves on the rear of the last trailer be open or closed?
Closed
Should the shut off valves on the rear of the last trailer be open or closed?
Closed
Should the shut off valves on rear of the last trailer be open or closed?
Closed
Should the shut off valves of the rear of the last trailer be open or closed?
Closed
