NEW
Font size
WorksheetsHeart Function and Circulation Worksheet
Total questions: 30
Worksheet time: 15mins
What is the primary function of the pericardium?
To pump blood
To protect the heart
To generate electrical impulses
To filter blood
Which layer of the heart wall contains cardiac muscle tissue?
Endocardium
Myocardium
Pericardium
Epicardium
What kind of circulation does the right side of the heart support?
Systemic circulation
Coronary circulation
Pulmonary circulation
Peripheral circulation
Which chamber of the heart pumps blood into the systemic circulation?
Right atrium
Left atrium
Right ventricle
Left ventricle
What is the function of the tricuspid valve?
To prevent backflow into the left atrium
To prevent backflow into the right atrium
To prevent backflow into the left ventricle
To prevent backflow into the pulmonary artery
During diastole, what is the state of the myocardium?
Contracting
Relaxed
In recovery
Both B and C
What percentage of blood enters the ventricles via passive filling during diastole?
30%
50%
70%
Which phase of the cardiac cycle involves the contraction of the atria?
Diastole
Atrial systole
Ventricular systole
Recovery phase
What mineral is essential for heart muscle contraction?
Sodium
Potassium
Calcium
Magnesium
Where does the cardiac conduction signal originate?
AV node
Purkinje fibres
Bundle of His
SA node
What is the main function of the bundle of His?
To delay the impulse
To transmit impulses to the ventricles
To contract the atria
To regulate sinus rhythm
What does an ECG record?
Blood pressure
Heart sounds
Electrical activity of the heart
Oxygen levels in the blood
Which valve prevents backflow into the left ventricle?
Tricuspid valve
Pulmonary valve
Mitral valve
Aortic valve
How long does ventricular systole typically last?
0.1 seconds
0.3 seconds
0.4 seconds
0.6 seconds
What is the primary function of the atria?
To pump blood into the lungs
To collect blood and transfer it to the ventricles
To generate electrical impulses
To prevent backflow of blood
What ensures that blood flows in the correct direction in the heart?
Blood vessels
Valves
Atria
Myocardium
Which structure delays the electrical impulse in the heart?
SA node
AV node
Purkinje fibres
Bundle branches
What is the normal rhythm of the heart called?
Atrial rhythm
Ventricular rhythm
Sinus rhythm
Cardiac rhythm
Which valve is located between the right ventricle and the pulmonary artery?
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve
D. Mitral valve
What ensures coordinated contraction of the heart muscle?
The AV node alone
The bundle of His alone
The cardiac conduction system
What is the role of Purkinje fibres?
To delay the impulse
To distribute the impulse to ventricular muscle
To transmit the impulse to the atria
To generate the impulse
What happens to the tricuspid and mitral valves during ventricular systole?
They open
They close
They remain partially open
They are inactive
Which heart chamber receives blood from the lungs?
Right atrium
Left atrium
Right ventricle
Left ventricle
Where is cardiac muscle tissue exclusively found?
In all blood vessels
In the walls of the heart
In the lungs
In the systemic circulation
Which heart valve is also known as the bicuspid valve?
Tricuspid valve
Mitral valve
Aortic valve
Pulmonary valve
What is the approximate duration of atrial systole?
0.1 seconds
0.2 seconds
0.3 seconds
0.4 seconds
What is the main purpose of the sinoatrial (SA) node?
To delay the impulse
To act as the heart's pacemaker
To contract the ventricles
To prevent backflow
What type of muscle is cardiac muscle?
Voluntary, striated
Involuntary, smooth
Involuntary, striated
Voluntary, smooth
What happens to the aortic valve during ventricular systole?
It opens
It closes
It remains partially open
It is inactive
What is the primary role of the heart valves?
To generate electrical impulses
To direct blood flow
To oxygenate blood
To absorb nutrients
