Question 1

Cardiac muscle contracts faster than skeletal muscle.

Accepted Answer

A) True 
 B)False

Question 2

The cardiac output is affected by all of the following EXCEPT

Accepted Answer

A)   Peripheral resistance
B)   Heart rate
C)   Stroke volume
D)   All of the above affect the cardiac outputE) B) and C)
F) A) and D)

Question 3

What are the muscular ridges that are found in the atria of the heart?

Accepted Answer

A)   Trabeculae carneae
B)   Pectinate muscles
C)   Chordae tendineae
D)   All of the above are muscular ridges in the atria of the heartE) A) and C)
F) None of the above

Question 4

Stenosis is a swelling of a heart valve.

Accepted Answer

A) True 
 B)False

Question 5

Which one of the following events does NOT occur during ventricular diastole?

Accepted Answer

A)   Ventricular pressure decreases
B)   AV valves close
C)   Semilunar valves close
D)   All of these events occur during ventricular diastoleE) A) and B)
F) B) and C)

Question 6

Which of the following are heart valves?

Accepted Answer

A)   Atrioventricular valves
B)   Semilunar valves
C)   Sinoatrial valves
D)   Both the atrioventricular and semilunar valvesE) A) and B)
F) None of the above

Question 7

The left atrioventricular valve is called the bicuspid or mitral valve.

Accepted Answer

A) True 
 B)False

Question 8

What is the law that states an increase in the resting length of a cardiac muscle fiber will result in a greater force of contraction of a cardiac muscle fiber?

Accepted Answer

A)   All-or-none law of cardiac muscle
B)   Ohm's law of the heart
C)   Starling's law of the heart
D)   Boyle's law of the heartE) B) and C)
F) A) and B)

Question 9

The heart wall is composed of three layers. Which of the following is NOT a layer of the heart wall?

Accepted Answer

A)   Endocardium
B)   Intercardium
C)   Epicardium
D)   MyocardiumE) B) and C)
F) C) and D)

Question 10

What are the veins that carry blood to the heart?

Accepted Answer

A)   Pulmonary veins
B)   Inferior vena cava
C)   Superior vena cava
D)   All of these veins carry blood to the heartE) B) and C)
F) All of the above

Question 11

The pulmonary trunk divides into the left and right pulmonary veins and carries blood to the lungs.

Accepted Answer

A) True 
 B)False

Question 12

Blood is drained from the heart muscle by which of the following blood vessels?

Accepted Answer

A)   Coronary arteries
B)   Superior vena cava
C)   Pulmonary veins
D)   Coronary sinusE) A) and D)
F) All of the above

Question 13

During the PR interval,

Accepted Answer

A)   The ventricles contract
B)   The atria contract
C)   The atria and ventricles are at rest
D)   Both the atria and ventricles contractE) B) and C)
F) None of the above

Question 14

When the ventricles contract

Accepted Answer

A)   The atrioventicular valves open and the semilunar valves open
B)   The atrioventicular valves open and the semilunar valves close
C)   The atrioventicular valves close and the semilunar valves open
D)   The atrioventicular valves close and the semilunar valves closeE) B) and C)
F) A) and C)

Question 15

Which of the following is responsible for the second heart sound of "dupp"?

Accepted Answer

A)   Aortic semilunar valve closing
B)   Tricuspid valve closing
C)   Pulmonary semilunar valve closing
D)   Both the aortic and pulmonary semilunar valves closingE) B) and D)
F) All of the above

Question 16

Which one of the following is increased when the adrenal glands release epinephrine and norepinephrine?

Accepted Answer

A)   Heart rate
B)   Stroke volume
C)   Blood pressure
D)   All of the above are increase with epinephrine and norepinephrineE) C) and D)
F) All of the above

Question 17

The right atrium receives blood from which of the following veins?

Accepted Answer

A)   Superior vena cava
B)   Inferior vena cava
C)   Coronary sinus
D)   All of these veins carry blood to the right atriumE) None of the above
F) A) and B)

Question 18

Which of the following is the correct sequence of structures in the heart's conducting system?
1.AV bundles
2.AV node
3.Purkinje fibers
4.SA node

Accepted Answer

A)   1,2,3,4
B)   4,2,3,1
C)   4,2,1,3
D)   2,4,1,3E) A) and B)
F) A) and C)

Question 19

The P wave of the ECG represents ventricular depolarization.

Accepted Answer

A) True 
 B)False

Question 20

The atria are chambers that receive blood from the veins.

Accepted Answer

A) True 
 B)False

Exam 17: The Heart

Blood is drained from the heart muscle by which of the following blood vessels?

Correct AnswerverifiedShow Answer

The heart wall is composed of three layers. Which of the following is NOT a layer of the heart wall?

Correct AnswerverifiedShow Answer

The left atrioventricular valve is called the bicuspid or mitral valve.

Correct AnswerverifiedShow Answer

The right atrium receives blood from which of the following veins?

Correct AnswerverifiedShow Answer

Which of the following are heart valves?

Correct AnswerverifiedShow Answer

What are the muscular ridges that are found in the atria of the heart?

Correct AnswerverifiedShow Answer

During the PR interval,

Correct AnswerverifiedShow Answer

What are the veins that carry blood to the heart?

Correct AnswerverifiedShow Answer

Which of the following is the correct sequence of structures in the heart's conducting system? 1.AV bundles 2.AV node 3.Purkinje fibers 4.SA node

Correct AnswerverifiedShow Answer

When the ventricles contract

Correct AnswerverifiedShow Answer

The P wave of the ECG represents ventricular depolarization.

Correct AnswerverifiedShow Answer

The cardiac output is affected by all of the following EXCEPT

Correct AnswerverifiedShow Answer

The pulmonary trunk divides into the left and right pulmonary veins and carries blood to the lungs.

Correct AnswerverifiedShow Answer

Which of the following is responsible for the second heart sound of "dupp"?

Correct AnswerverifiedShow Answer

Which one of the following is increased when the adrenal glands release epinephrine and norepinephrine?

Correct AnswerverifiedShow Answer

Which one of the following events does NOT occur during ventricular diastole?

Correct AnswerverifiedShow Answer

What is the law that states an increase in the resting length of a cardiac muscle fiber will result in a greater force of contraction of a cardiac muscle fiber?

Correct AnswerverifiedShow Answer

Cardiac muscle contracts faster than skeletal muscle.

Correct AnswerverifiedShow Answer

Stenosis is a swelling of a heart valve.

Correct AnswerverifiedShow Answer

The atria are chambers that receive blood from the veins.

Correct AnswerverifiedShow Answer

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