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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.
When evacuating a refrigeration system that has solenoid valveswhat special procedure must be followed?
When evacuating a refrigeration system with solenoid valves, it is important to ensure that the solenoid valves are in the correct position to prevent any refrigerant from being trapped in the system. This usually means that the valves should be in the open position during evacuation. Additionally, ensure that the suction and discharge service valves are closed to avoid introducing air or moisture into the system. Always follow the manufacturer's guidelines for specific procedures related to the solenoid valves in the system.
When are superheater safety valves set to open?
after the main safety valves are open
What causes the valves to open and close during the heart cycle?
By minute electrical singles produced by the heart itself to open and close the valves.
Which valves in the heart are open during diastole?
During systole, both atrioventricular valves (tricuspid and mitral) are closed. The aortic valve is open. During diastole, both atrioventricular valves are open, and the aortic valve is closed.
When the ventricles are relaxed are the semilunar valves open or closed when the AV valves are open?
When the ventricles are relaxed, the semilunar valves are closed, while the atrioventricular (AV) valves are open. This allows blood to flow from the atria into the ventricles. The closure of the semilunar valves prevents backflow of blood from the arteries into the ventricles during this phase.
What events occur when the semilunar valves are open?
The semilunar valves are open when blood is being pumped by ventricular contraction. This event is called systole.
Control valves should always be in what position?
open
How do bicuspid valves open?
left ventricle
What position should control valves be in?
open
Do cuspid valves open into the aorta?
yes
List the valves of the heart and describe how they operate.?
DESCRIBE THE ACTION OF HEART VALVES. WHEN DO THEY OPEN AND CLOSE?
