Electrical System of the Heart
Authored by Jean Genzale
Biology
University
NGSS covered
Used 172+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The electrical impulse that initiates a heartbeat is generated in which structure?
Atrioventricular (AV) node
Sinoatrial (SA) node
Atria
Ventricles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the correct sequence of the normal conduction pathway of the heart?
AV node → SA node → Bundle of His → Purkinje fibers
SA node → AV node → Bundle of His → Purkinje fibers
Bundle of His →SA node → AV node → Purkinje fibers
AV node → SA node → Purkinje fibers → Bundle of His
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The PR interval on an electrocardiogram (ECG) represents the time taken for the electrical impulse to travel from the:
SA node to the AV node
AV node to the ventricles
Atria to the ventricles
Ventricles to the atria
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The QRS complex on an ECG represents:
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Ventricular repolarization
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The T wave on an ECG represents:
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Ventricular repolarization
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which structure is responsible for transmitting the electrical impulse from the atria to the ventricles?
AV node
SA node
Bundle of His
Purkinje fibers
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The normal heart rate range is typically between:
40-60 beats per minute
60-100 beats per minute
100-160 beats per minute
160-200 beats per minute
Tags
NGSS.HS-LS1-3
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