Electrocardiogram (ECG) & ANS control of the heart quiz

What does the P wave in an electrocardiogram (ECG) represent?

• Atrial depolarization

• Ventricular depolarization

• Atrial repolarization

• Ventricular repolarization

Which part of the ECG represents ventricular depolarization?

• P wave

• QRS complex

• T wave

• U wave

What is the significance of the T wave in an ECG?

• Atrial depolarization

• Ventricular depolarization

• Atrial repolarization

• Ventricular repolarization

Which arrhythmia is characterized by irregular and often rapid heartbeats originating from the atria?

• Premature Atrial Contractions (PACs)

• Atrial Fibrillation (AF)

• Ventricular Tachycardia (VT)

• Paroxysmal Atrial Tachycardia (PAT)

What is the range of a normal resting heart rate in adult humans?

• 50 bpm to 90 bpm

• 60 bpm to 100 bpm

• 70 bpm to 110 bpm

• 80 bpm to 120 bpm

What term is used to describe a heart rate below the normal range?

• Tachycardia

• Bradycardia

• Arrhythmia

• Hypertension

What term is used to describe a heart rate above the normal range?

• Tachycardia

• Bradycardia

• Arrhythmia

• Hypotension

From a normal resting heart rate of 80 bpm, what heart rate might be expected during parasympathetic stimulation?

• 180 bpm

• 60 bpm

• 90 bpm

• 120 bpm

Which type of stimulation is associated with slower depolarization?

• Sympathetic stimulation

• Parasympathetic stimulation

• Both types of stimulation

• Neither type of stimulation

Which type of stimulation is associated with more rapid depolarization?

• Sympathetic stimulation

• Parasympathetic stimulation

• Both types of stimulation

• Neither type of stimulation