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CH. 19 part 3

A detailed infographic illustrating the human heart anatomy and the electrical conduction system, showcasing key terms like SA node, heart sounds, and arrhythmias.

Heart Physiology Quiz

Test your knowledge on cardiac physiology with this engaging quiz! Perfect for students, teachers, and anyone interested in understanding the fascinating workings of the heart.

Sharpen your understanding of heart rhythms, functions, and conditions with these 10 carefully crafted questions:

Identify the effects of SA node damage
Understand cardiac output and reserve
Recognize heart sounds and their significance

10 Questions2 MinutesCreated by PacingHeart123

If the sinuatrial (SA) node is damaged, the heart will likely beat at __________ bpm.

10 to 20

0 to 10

70 to 80

20 to 40

40 to 50

The difference between the maximum and resting cardiac output is called __________.

Contractility

Afterload

Cardiac reserve

Stroke volume

Preload

Mitral valve prolapse (MVP) generates a murmur associated with the __________ heart sound that occurs when the __________.

Lubb (S1); ventricles relax

Lubb (S1); ventricles contract

Dupp (S2); atria relax

Dupp (S2); ventricles relax

Lubb (S1); atria contract

Which term refers to relaxation of the heart?

Bradycardia

DiastoleCorrect

Asystole

Systole

Fibrillation

The plateau in the action potential of cardiac muscle results from the action of __________.

K+ inflow

Fast Ca2+ channels

K+ outflow

Slow Ca2+ channels

Na+ inflow

When the aortic semilunar valve closes and blood bounces off of it, it produces the __________ heart sound that is ultimately related to when the __________.

Lubb (S1); ventricles contract

Dupp (S2); ventricles relax

Lubb (S1); atria contract

Lubb (S1); ventricles relax

Dupp (S2); atria relax

What is the ability to rhythmically depolarize without outside stimulation called?

Automatic

Autorhythmic

Contractile

Autonomic

Myogenic

Atrial depolarization causes the _________.

T wave

P wave

QRS complex

First heart sound

Quiescent period

Any abnormal cardiac rhythm is called a(n) __________.

Ectopic focus

Arrhythmia

Sinus rhythm

Heart block

Nodal rhythm

Sometimes your patient experiences two ventricular contractions to a single atrial contraction. Which arrhythmia do you think they might have?

Ventricular fibrillation

Total heart block

Bundle branch block

Atrial fibrillation

Preventricular contraction

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