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WorksheetsCardiac Cycle
Total questions: 10
Worksheet time: 5mins
A complete of a cardiac cycle takes place for about
8 seconds
0.8 second
0.3 second
0.4 second
If there is higher pressure in the aorta, there will be no movement of blood out of the ventricle
True
False
Which of the following is true about the semi-lunar valves in the heart?
They are between atria and ventricles
They close when pressure in the arteries is higher than pressure in the atria
They prevent backflow of blood into the atria
They open when pressure in the ventricles is higher than pressure in the arteries
During ventricular systole, which of the following occurs?
Atrioventricular valves close and semilunar valves close
Atrioventricular valves close and semilunar valves open
Atrioventricular valves open and semilunar valves are open
Atrioventricular valves open and semilunar valves close
The graph shows pressure changes in the left atrium, left ventricle and aorta during a cardiac cycle.
What is happening at point D on the graph?
semilunar valves open
semilunar valves close
atrioventricular valves open
atrioventricular valves close
The graph shows pressure changes in the left atrium, left ventricle and aorta during a cardiac cycle.
What would the curve look like for the right ventricle, if placed on this graph?
same pattern but to the right of the left ventricle curve
different pattern and to the right of the left ventricle curve
same pattern but lower than the left ventricle curve
different pattern and lower than the left ventricle curve
