WorksheetsCardiac Cycle(2)
Total questions: 15
Worksheet time: 15mins
The graph shows changes in blood pressure during one cardiac cycle, what is happening to the ventricle and aortic semilunar valve at point X?
Ventricles contracting, aortic semilunar valve closing
ventricle contracting, aoritic semilunar valve opening
ventricle relaxing, aortic semilunar valve opening
ventricle relaxing, aortic semilunar valve opening
Which of the following statements best explains the changes in blood pressure occurring within the ventricle at that point X?
the ventricles is contracting
the ventricle is relaxing
the atrioventricular valve is open
blood is leaving the ventricle
Why is the pressure in the ventricle and aorta almost equal during ventricular systole?
because the ventricle recieves blood directly from the aorta
because the pressure with which blood leaves the ventricle is the pressure with which it enters the aorta
because the semilunar valve between the ventricle and aorta is open
because the atrioventricular valve is closed
Using the graph, at which point does the atrioventricular valve open?
A
B
C
D
At which point is the pressure in the atria greater than pressure in the ventricles?
after point A
after point B
after point C
after point D
At which point is pressure in the ventricles greater than pressure in the atria?
after point A
after point B
after point C
after point D
The chart shows two cardiac cycles of a student, with the sequence of events set against a time scale. How many times does the students heart beat in 3 minutes?
80
240
120
360
The diagram shows the pressure changes in various structures of the left side of the heart during the cardiac cycle. At the end of which period, A, B, C or D is the ventricle full of blood?
A
B
C
D
With reference to the graph, which of the following statement is true?
Blood is moving out of the ventricles during period A
The ventricles are full of blood throughout period B
Blood is moving out of the ventricles during period C
The ventricle is completely empty during period D
Using the graph, which line is represented by X and Y?
X: pressure changes in the aorta, Y: pressure changes in the ventricle
X: pressure changes in the ventricle, Y: pressure changes in the aorta
X: volume changes in the ventricle, Y: volume changes in the aorta
X: volume changes in the aorta, Y: volume changes in the ventricle
Using the graph, which structure recorded the lowest pressure ever during the cycle?
left ventricle
aorta
left atrium
none of the above
Using the graph, which line is represented by the graph Z?
Left ventricle
Left atrium
aorta
pulmonary artery
The diagram shows pressure changes in the left side of the heart during the cardiac cycle. What happens at X?
atrioventricular valves close
atrioventricular valves open
semilunar valves close
semilunar valves open
