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WorksheetsCHAPTER 8 HEART STRUCTURE AND INITIATION OF HEARTBEAT
Total questions: 19
Worksheet time: 27mins
Which valve prevents the backflow of blood from the left ventricle to the left atrium?
Tricuspid valve
Pulmonary valve
Aortic valve
Bicuspid (mitral) valve
Which chamber of the heart has the thickest wall?
Which vessel carries oxygenated blood from the lungs to the heart?
Aorta
Pulmonary vein
Pulmonary artery
Vena cava
The right atrium receives (a) blood from the body via the vena cava.
The left ventricle pumps blood into the (a) , which distributes oxygenated blood to the body.
Which chamber is the strongest?
The (a) valve prevents backflow of blood from the right ventricle to the right atrium.
Match the following
Largest artery in the body
Left ventricles
Carries oxygenated blood from lungs to heart
AV Valves
Pumps oxygenated blood to the whole body
Pulmonary veins
Delivers deoxygenated blood to the lungs
Pulmonary arteries
Prevents backflow of blood into the atria
Aorta
Explain why the left ventricle has a thicker muscular wall compared to the right ventricle.
The left ventricle has to pump (a) blood to the (b) body through the systemic circulation, which requires a stronger (c) . In contrast, the right ventricle only pumps blood to the nearby (d) , which requires less force.
Identify the major chambers of the heart and blood vessels
The contraction of the atria is controlled by the:
SA node
AV node
Purkinje fibres
Bundle of His
Which label is representing the SA node?
A
C
D
E
Which label is representing the Bundle of His?
A
C
D
E
Which label is representing the left & right branches of Bundle of His?
A
C
D
E
Drag and drop each label to its correct position
bundle branch
AV node
pulmonary artery
Bundle of His
SA node
What is the correct sequence of the electrical conduction system in the heart?
SA node -> AV node -> Bundle of His -> Purkinje fibers
AV node -> SA node -> Bundle of His -> Purkinje fibers
SA node -> AV node -> Purkinje fibers -> Bundle of His
SA node -> AV node -> Bundle of His -> Atria
Which of the following is the function
of sino- atrial node (SAN)?
Control the ventricular contraction
Transmit the impulse to the ventricular walls
Control the opening of semiunar valves
Act as a pacemaker which initiates the heart beat
Exercise makes your heartbeat faster.
Yes
No
