Question 1

The interaterial bundles divide into right and left bundle branches.

Accepted Answer

A) True 
 B)False

Question 2

In an ECG both the deflections themselves and the interval between deflections can provide information about the electrical conduction through the heart.

Accepted Answer

A) True 
 B)False

Question 3

The midline of the body divides the heart into equal right and left halves.

Accepted Answer

A) True 
 B)False

Question 4

The skeleton of the heart is made of cartilage rather than bone.

Accepted Answer

A) True 
 B)False

Question 5

In both the atria and ventricles, the first cells to depolarize are also the first cells to repolarize.

Accepted Answer

A) True 
 B)False

Question 6

Atrial systole causes blood to:

Accepted Answer

A)   leave the heart.
B)   move through the semilunar valves.
C)   move through the cuspid valves.
D)   do both A and B.E) None of the above
F) All of the above

Question 7

What is the correct explanation for how cardiac tamponade can affect the heart?

Accepted Answer

A)   It causes a prolapsed mitral valve, one whose flaps extend back into the left atrium, causing incompetence (leaking)  of the valve.
B)   It causes blood to not only eject forward into the aorta but also regurgitate back into the left ventricle because of a leaky aortic semilunar valve.
C)   It is a compression of the heart that impairs its pumping action and makes immediate pericardial drainage necessary.
D)   It is a delayed inflammatory response to streptococcal infection that results in stenosis or other deformities of the valves, chordae tendineae, or myocardium.E) None of the above
F) A) and B)

Question 8

Blood passing through the aortic semilunar valves has just left the left ventricle.

Accepted Answer

A) True 
 B)False

Question 9

The normal pattern of impulse conduction through the heart is:

Accepted Answer

A)   AV node, SA node, bundle of His, and Purkinje fibers.
B)   AV node, SA node, Purkinje fibers, and bundle of His.
C)   SA node, AV node, Purkinje fibers, and bundle of His.
D)   SA node, AV node, bundle of His, and Purkinje fibers.E) All of the above
F) C) and D)

Question 10

The cardiovascular system consists of the heart and blood vessels.

Accepted Answer

A) True 
 B)False

Question 11

Match each ECG wave or complex with the corresponding action in the cardiac cycle.
-Ventricular repolarization

Accepted Answer

A)  QRS complex
B)  P wave
C)  T wave
D)  U waveE) None of the above
F) B) and C)

Question 12

Match each part of the conduction system of the heart to the description of its location or function.
-Bundles that come from the atrioventricular node

Accepted Answer

A)  Interatrial bundles
B)  Atrioventricular node
C)  Sinoatrial node
D)  Purkinje fibers
E)  Bundles of HisF) Internodal bundlesG) A) and C)
H) A) and F)

Question 13

The saclike structure around the heart is the:

Accepted Answer

A)   epicardium.
B)   myocardium.
C)   endocardium.
D)   pericardium.E) A) and B)
F) A) and D)

Question 14

Which of the following statements is not true of the heart?

Accepted Answer

A)   The heart of an adult is proportionally larger than the heart of an infant.
B)   The heart reaches its adult size between puberty and 25 years of age.
C)   The average weight of the heart is about 85 grams more in the male than in the female.
D)   The heart tends to take on the shape of the chest of the individual.E) None of the above
F) A) and B)

Question 15

Match each term related to heart circulation with its corresponding location or description.
-Valve through which the right ventricle pumps blood

Accepted Answer

A)  Right ventricle
B)  Right atrium
C)  Left atrium
D)  Left ventricle
E)  Right atrioventricular valveF) Left atrioventricular valveG) Aortic semilunar valveH) Pulmonary semilunar valveI) Superior vena cavaJ) AortaK) Pulmonary veinL) Pulmonary arteryM) D) and L)
N) All of the above

Question 16

The conduction system of the heart is composed of specialized motor neurons that are embedded in the heart muscle.

Accepted Answer

A) True 
 B)False

Question 17

The left pump helps to move blood through the systemic circulation.

Accepted Answer

A) True 
 B)False

Question 18

The first heart sound heard, or the "lub" sound, is caused by the _____ and the _____ valves closing.

Accepted Answer

A)   ventricles contracting; AV
B)   atria contracting; SL
C)   atria contracting; SA
D)   ventricles relaxing; AVE) B) and D)
F) B) and C)

Question 19

Blood passing through a semilunar valve will enter a heart chamber.

Accepted Answer

A) True 
 B)False

Question 20

Match each term related to heart circulation with its corresponding location or description.
-Blood vessel that empties into the right atrium

Accepted Answer

A)  Right ventricle
B)  Right atrium
C)  Left atrium
D)  Left ventricle
E)  Right atrioventricular valveF) Left atrioventricular valveG) Aortic semilunar valveH) Pulmonary semilunar valveI) Superior vena cavaJ) AortaK) Pulmonary veinL) Pulmonary arteryM) A) and L)
N) B) and K)

Exam 28: Heart

Atrial systole causes blood to:

Correct AnswerverifiedShow Answer

The interaterial bundles divide into right and left bundle branches.

Correct AnswerverifiedShow Answer

Blood passing through a semilunar valve will enter a heart chamber.

Correct AnswerverifiedShow Answer

In both the atria and ventricles, the first cells to depolarize are also the first cells to repolarize.

Correct AnswerverifiedShow Answer

The conduction system of the heart is composed of specialized motor neurons that are embedded in the heart muscle.

Correct AnswerverifiedShow Answer

Match each term related to heart circulation with its corresponding location or description. -Valve through which the right ventricle pumps blood

Correct AnswerverifiedShow Answer

Match each ECG wave or complex with the corresponding action in the cardiac cycle. -Ventricular repolarization

Correct AnswerverifiedShow Answer

In an ECG both the deflections themselves and the interval between deflections can provide information about the electrical conduction through the heart.

Correct AnswerverifiedShow Answer

The cardiovascular system consists of the heart and blood vessels.

Correct AnswerverifiedShow Answer

The saclike structure around the heart is the:

Correct AnswerverifiedShow Answer

Match each part of the conduction system of the heart to the description of its location or function. -Bundles that come from the atrioventricular node

Correct AnswerverifiedShow Answer

The skeleton of the heart is made of cartilage rather than bone.

Correct AnswerverifiedShow Answer

The midline of the body divides the heart into equal right and left halves.

Correct AnswerverifiedShow Answer

The first heart sound heard, or the "lub" sound, is caused by the _____ and the _____ valves closing.

Correct AnswerverifiedShow Answer

Match each term related to heart circulation with its corresponding location or description. -Blood vessel that empties into the right atrium

Correct AnswerverifiedShow Answer

The left pump helps to move blood through the systemic circulation.

Correct AnswerverifiedShow Answer

The normal pattern of impulse conduction through the heart is:

Correct AnswerverifiedShow Answer

What is the correct explanation for how cardiac tamponade can affect the heart?

Correct AnswerverifiedShow Answer

Blood passing through the aortic semilunar valves has just left the left ventricle.

Correct AnswerverifiedShow Answer

Which of the following statements is not true of the heart?

Correct AnswerverifiedShow Answer

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The first heart sound heard, or the "lub" sound, is caused by the _ and the _ valves closing.

Correct Answer
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