0
What causes the valves to open and close during the heart cycle?
Wiki User
∙ 11y ago
By minute electrical singles produced by the heart itself to open and close the valves.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoThe valves open and close.
Add your answer:
Earn +20 pts
When do the AV valve close during the cardiac cycle?
AV valves close during the systole phase of the cardiac cycle.
Are both sets of valves closed during the cardiac cycle?
Pulmonary and aortic valves are semilunar valves having three semilunar cusps each. these valves open with the free ends facing the vessels when the heart contracts and closes when heart relaxes thus preventing regurgitation
During the isovolumetric relaxation phase of the cardiac cycle the AV valves are and the semilunar valves are?
closed and closed
Are both sets of heart valves open during any part of the cardiac cycle?
Yes, both sets of valves are closed twice during any one cardiac cycle.
The causes of the phases of the moon is a cycle that is close to long?
28 Days
What causes the water cycle during the rainy season?
water
What is valve float?
"Floating Valves" refers to a condition in which the valve-springs fail to fully close the valves, allowing them to "float" during the stroke cycle. Floating valves can result in valve-piston contact with consequent catastrophic mechanical damage. This is caused by revving the engine past it's red-line, or the maximum RPMs the engine was designed to run.
The first sound of a cardiac cycle occurs when?
closure of the mitral and tricuspid valves.
When would a murmur occur in the cycle if the av valves were not closing properly?
A murmur would occur during the lubb portion of the cycle if the AV valves were not closing properly. Most heart murmurs do not cause the patient any problems.
What is the position of the intake and exhaust valves during most of the power stage in a four cycle gas engine?
They are closed during the power stage.
What causes groin pain in women?
mostly during the menstruation cycle causes the most pain
What position of the intake and exhaust valves during most of the power stage in a four-cycle gas engine?
Closed
