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WorksheetsCardiac Cycle and Conduction
Total questions: 8
Worksheet time: 4mins
What are the phases of the cardiac cycle?
Contraction and relaxation
Inhale and exhale
Expansion and compression
Diastole and systole
Which phase of the cardiac cycle is known as the relaxation phase?
Diastole
Systole
Ventricular contraction
Atrial contraction
During which phase of the cardiac cycle does the ventricle contract and blood is pumped out of the heart?
Systole
Atrial contraction
Relaxation phase
Diastole
What is the role of the SA node in the electrical conduction of the heart?
Regulating blood pressure
Producing red blood cells
Stimulating muscle growth
Initiating the electrical impulse for each heartbeat
Which part of the heart is responsible for initiating the electrical impulse that causes the heart to beat?
Left ventricle
Pulmonary artery
Aorta
SA node
What is the function of the AV node in the conduction system of the heart?
To regulate the blood pressure in the heart
To delay the electrical impulse and allow the atria to fully contract before the ventricles are stimulated.
To speed up the electrical impulse and cause the ventricles to contract before the atria
To stop the electrical impulse and prevent the heart from beating
What is the term for the time delay between the atrial and ventricular contractions in the heart?
AV delay
Heartbeat lag
Atrial delay
Ventricular delay
How does the sympathetic nervous system affect the conduction of the heart?
Decreases heart rate and conduction velocity
Has no effect on heart rate or conduction velocity
Increases heart rate and conduction velocity
Causes irregular heartbeats and slow conduction
