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WorksheetsThe cardiac cycle
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The emptying of the atria is controlled by the:
a)
SA node
b)
AV node
c)
Purkinje fibres
d)
Bundle of His
2.
The pacemaker of the heart is also known as the....
a)
AV node
b)
SA node
c)
Purkinje fibres
d)
Bundle of His
3.
What fibres allow the ventricles to contract?
a)
SA
b)
AV
c)
Purkinje
d)
Bundle of His
4.
During the systole phase of the cardiac cycle, the ventricles....
a)
Contract
b)
Relax
5.
The heart muscle that these electrical signals control is known as the myocardium
a)
True
b)
False
6.
Which letter/s of the ECG shows the ventricles contracting.....
a)
P
b)
QRS
c)
ST
7.
Which node delays the ventricles from firing before fully filled?
a)
AV
b)
SA
8.
What is the definition of the Cardiac Cycle?
a)
the contraction of the atria
b)
the sequence of events that occur during one complete heartbeat
c)
the contraction and relaxation of the ventricles
d)
the circulation of blood in the heart
9.
During ventricular ejection
a)
only the AV valves open
b)
the semilunar valves open and the AV valves close
c)
only the semilunar valves close
d)
the semilunar valves close and the AV valves open
10.
The semilunar valves are only open during which phase
a)
atrial contraction and ventricular filling
b)
isovolumetric contraction
c)
ventricular ejection
d)
isovolumetric relaxation
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