Question 1

The volume of blood ejected by each ventricle in one minute is called

Accepted Answer

A)  the cardiac reserve.
B)  the preload.
C)  the afterload.
D)  the stroke volume.
E)  the cardiac output.F) None of the above
G) All of the above

Question 2

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

Accepted Answer

A)  lubb (S1) ; atria contract
B)  dupp (S2) ; atria relax
C)  lubb (S1) ; ventricles contract
D)  dupp (S2) ; ventricles relax
E)  lubb (S1) ; ventricles relaxF) A) and D)
G) C) and D)

Question 3

The is the pacemaker that initiates each heart beat.

Accepted Answer

A)  sympathetic division of the nervous system
B)  autonomic nervous system
C)  sinoatrial (S
A)   node
D)  atrioventricular (AV)  node
E)  cardiac conduction systemF) A) and E)
G) B) and C)

Question 4

This figure shows a normal electrocardiogram.Missing of waves at point might indicate SA node damage.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) B) and E)
G) A) and C)

Question 5

This figure shows the internal anatomy of the heart.What does "4" represent?

Accepted Answer

A)  a papillary muscle
B)  pectinate muscles
C)  tendinous cords
D)  the interventricular septum
E)  the interatrial septumF) None of the above
G) C) and D)

Question 6

The performs the work of the heart.

Accepted Answer

A)  fibrous skeleton
B)  pericardial cavity
C)  endocardium
D)  myocardium
E)  epicardiumF) B) and C)
G) All of the above

Question 7

Isovolumetric contraction occurs during the of the electrocardiogram.

Accepted Answer

A)  P wave
B)  P-Q segment
C)  R wave
D)  S-T segment
E)  T waveF) A) and B)
G) A) and C)

Question 8

Congestive heart failure (CHF)  of the right ventricle

Accepted Answer

A)  can cause pulmonary edema.
B)  can cause systemic edema.
C)  increases the ejection fraction of the right ventricle.
D)  reduces the ejection fraction of the left ventricle.
E)  increases cardiac output in both ventricles.F) A) and D)
G) A) and C)

Question 9

Repolarization of a ventricular cardiocyte takes longer than repolarization of a typical neuron.

Accepted Answer

A) True 
 B)False

Question 10

This figure shows the internal anatomy of the heart.What does "2" represent?

Accepted Answer

A)  the right atrioventricular (AV)  (tricuspid)  valve
B)  the left atrioventricular (AV)  (bicuspid)  valve
C)  the aortic valve
D)  the pulmonary valve
E)  the interventricular septumF) A) and B)
G) None of the above

Question 11

Atrial depolarization causes

Accepted Answer

A)  the P wave.
B)  the QRS complex.
C)  the T wave.
D)  the first heart sound.
E)  the quiescent period.F) C) and E)
G) B) and D)

Question 12

This figure shows a normal electrocardiogram.Two or more consecutive waves at point "1" might suggest

Accepted Answer

A)  sinus rhythm.
B)  nodal rhythm.
C)  ventricular fibrillation.
D)  premature ventricular contraction (PV
C)  .
E)  heart block.F) D) and E)
G) C) and E)

Question 13

Cardiac muscle can only use glucose as a source of organic fuel.

Accepted Answer

A) True 
 B)False

Question 14

The tricuspid valve regulates the opening between

Accepted Answer

A)  the right atrium and the left atrium.
B)  the right atrium and right ventricle.
C)  the right atrium and the left ventricle.
D)  the left atrium and the left ventricle.
E)  the left ventricle and the right ventricle.F) A) and E)
G) B) and D)

Question 15

The provides most of the Ca₂+ needed for myocardial contraction.

Accepted Answer

A)  extracellular fluid
B)  mitochondria
C)  sarcoplasmic reticulum
D)  Golgi apparatus
E)  cytoskeletonF) All of the above
G) B) and C)

Question 16

Parasympathetic stimulation reduces heart rate.

Accepted Answer

A) True 
 B)False

Question 17

Which of these is not part of the cardiac conduction system?

Accepted Answer

A)  the sinoatrial (S
A)   node
B)  the tendinous cords (T
C)  
C)  the atrioventricular (AV)  node
D)  the atrioventricular (AV)  bundle (bundle of His) 
E)  the Purkinje fibersF) A) and B)
G) All of the above

Question 18

The fibrous skeleton of the heart serves as electrical insulation between the atria and the
ventricles.

Accepted Answer

A) True 
 B)False

Question 19

This figure shows an action potential in a ventricular cardiocyte.indicates when sodium channels are fully open.

Accepted Answer

A)  1
B)  3
C)  2
D)  5
E)  4F) A) and E)
G) A) and D)

Question 20

Desmosomes form channels that allow each cardiocyte to electrically stimulate its neighbors.

Accepted Answer

A) True 
 B)False

Exam 19: The Circulatory System: Heart

The tricuspid valve regulates the opening between

Correct AnswerverifiedShow Answer

Congestive heart failure (CHF) of the right ventricle

Correct AnswerverifiedShow Answer

This figure shows the internal anatomy of the heart.What does "4" represent?

Correct AnswerverifiedShow Answer

Desmosomes form channels that allow each cardiocyte to electrically stimulate its neighbors.

Correct AnswerverifiedShow Answer

The fibrous skeleton of the heart serves as electrical insulation between the atria and the ventricles.

Correct AnswerverifiedShow Answer

The performs the work of the heart.

Correct AnswerverifiedShow Answer

This figure shows an action potential in a ventricular cardiocyte.indicates when sodium channels are fully open.

Correct AnswerverifiedShow Answer

The volume of blood ejected by each ventricle in one minute is called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The provides most of the Ca₂+ needed for myocardial contraction.

Correct AnswerverifiedShow Answer

The is the pacemaker that initiates each heart beat.

Correct AnswerverifiedShow Answer

Isovolumetric contraction occurs during the of the electrocardiogram.

Correct AnswerverifiedShow Answer

Parasympathetic stimulation reduces heart rate.

Correct AnswerverifiedShow Answer

Atrial depolarization causes

Correct AnswerverifiedShow Answer

This figure shows a normal electrocardiogram.Missing of waves at point might indicate SA node damage.

Correct AnswerverifiedShow Answer

This figure shows a normal electrocardiogram.Two or more consecutive waves at point "1" might suggest

Correct AnswerverifiedShow Answer

This figure shows the internal anatomy of the heart.What does "2" represent?

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Which of these is not part of the cardiac conduction system?

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Cardiac muscle can only use glucose as a source of organic fuel.

Correct AnswerverifiedShow Answer

Repolarization of a ventricular cardiocyte takes longer than repolarization of a typical neuron.

Correct AnswerverifiedShow Answer

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