Question 1

What does the heart use as its primary fuel source?

Accepted Answer

A) ​glucose 
B) fatty acids 
C) lactate 
D) amino acids 
E) ​calcium 
A) ​glucose 
B) fatty acids 
C) lactate 
D) amino acids 
E) ​calcium B

Question 2

The heart is essentially in the middle of the chest,has a broad base at the top and tapers to a pointed tip,the apex,at the bottom.​

Accepted Answer

A) True 
 B)False  True

Question 3

What are the three distinct waveforms called that are found in a normal ECG?

Accepted Answer

A) ​A wave,B wave,C wave 
B) Q wave,R wave,S wave 
C) Q wave,R complex,S wave 
D) P wave,RST complex,Q wave 
E) ​P wave,QRS complex,T wave 
A) ​A wave,B wave,C wave 
B) Q wave,R wave,S wave 
C) Q wave,R complex,S wave 
D) P wave,RST complex,Q wave 
E) ​P wave,QRS complex,T wave E

Question 4

The main effect of parasympathetic stimulation on the SA node is to speed up depolarization so that contraction is reached more rapidly.​

Accepted Answer

A) True 
 B)False

Question 5

In what fashion does healthy blood flow?

Accepted Answer

A) ​pulsed 
B) laminar 
C) coagulative 
D) condensed 
E) ​regenerative 
A) ​pulsed 
B) laminar 
C) coagulative 
D) condensed 
E) ​regenerative

Question 6

An insufficient heart valve is often called a leaky valve because it lets blood leak back through when the valve should be closed.​

Accepted Answer

A) True 
 B)False

Question 7

What is the parasympathetic nerve supply to the SA and AV nodes?

Accepted Answer

A) ​vagus nerve 
B) trigeminal nerve 
C) accessory nerve 
D) cardiac nerve 
E) ​long thoracic nerve 
A) ​vagus nerve 
B) trigeminal nerve 
C) accessory nerve 
D) cardiac nerve 
E) ​long thoracic nerve

Question 8

What is the beginning of an atherosclerotic plaque called?

Accepted Answer

A) ​fatty streak 
B) endothelial plaque 
C) myocardial plaque 
D) inflammatory plate 
E) ​fibroma 
A) ​fatty streak 
B) endothelial plaque 
C) myocardial plaque 
D) inflammatory plate 
E) ​fibroma

Question 9

What are the two determinants of cardiac output?

Accepted Answer

A) ​size of the ventricles and stroke volume 
B) size of the heart and blood pressure 
C) blood pressure and heart size 
D) heart rate and ventricular volume 
E) ​heart rate and stroke volume 
A) ​size of the ventricles and stroke volume 
B) size of the heart and blood pressure 
C) blood pressure and heart size 
D) heart rate and ventricular volume 
E) ​heart rate and stroke volume

Question 10

What does the first heart sound signal the onset of?

Accepted Answer

A) ​atrial systole 
B) atrial diastole 
C) ventricular systole 
D) ventricular diastole 
E) ​firing of the SA node 
A) ​atrial systole 
B) atrial diastole 
C) ventricular systole 
D) ventricular diastole 
E) ​firing of the SA node

Question 11

The individual cardiac muscle cells are interconnected to form branching fibers,with adjacent cells joined end to end at specialized structures called __________.

Accepted Answer

The answer of The individual cardiac muscle cells are interconnected...

Question 12

Blood returning from the systemic circulation enters the right atrium via two large veins,the __________,one returning blood from above and the other returning blood from below heart level.​

Accepted Answer

The answer of Blood returning from the systemic circulation enters...

Question 13

What is a murmur called when it occurs between the first and the second heart sounds?

Accepted Answer

A) ​SA murmur 
B) atrial murmur 
C) ventricular murmur 
D) diastolic murmur 
E) ​systolic murmur 
A) ​SA murmur 
B) atrial murmur 
C) ventricular murmur 
D) diastolic murmur 
E) ​systolic murmur

Question 14

The QRS complex represents atrial depolarization.​

Accepted Answer

A) True 
 B)False

Question 15

Figure 9-14
Use the figure above (Figure 9-14)to answer the corresponding questions.
  
-Which number in the figure represents the QRS complex (ventricular depolarization)?

Accepted Answer

A) ​1 
B) 2 
C) 3 
D) 4 
E) ​5
F)6 
A) ​1 
B) 2 
C) 3 
D) 4 
E) ​5
F)6

Question 16

Stroke volume is determined by:

Accepted Answer

A) ​the extent of venous return and by parasympathetic activity 
B) the extent of venous return and by sympathetic activity 
C) the extent of arterial return and by parasympathetic activity 
D) the extent of arterial return and by sympathetic activity 
E) ​blood pressure and ventricular size 
A) ​the extent of venous return and by parasympathetic activity 
B) the extent of venous return and by sympathetic activity 
C) the extent of arterial return and by parasympathetic activity 
D) the extent of arterial return and by sympathetic activity 
E) ​blood pressure and ventricular size

Question 17

What is the upper range of ventricular contractions in the human heart due to the relatively long refractory period of the AV node?

Accepted Answer

A) ​125 beats per minute 
B) 150 beats per minute 
C) 165 beats per minute 
D) 185 beats per minute 
E) ​200 beats per minute 
A) ​125 beats per minute 
B) 150 beats per minute 
C) 165 beats per minute 
D) 185 beats per minute 
E) ​200 beats per minute

Question 18

Figure 9-14
Use the figure above (Figure 9-14)to answer the corresponding questions.
  
-Which number in the figure represents the P wave (atrial depolarization)?

Accepted Answer

A) ​1 
B) 2 
C) 3 
D) 4 
E) ​5
F)6 
A) ​1 
B) 2 
C) 3 
D) 4 
E) ​5
F)6

Question 19

Any variation from the normal rhythm and sequence of excitation of the heart is termed an arrhythmia.​

Accepted Answer

A) True 
 B)False

Question 20

Left-sided heart failure has more serious consequences than right-sided failure.

Accepted Answer

A) True 
 B)False

What does the heart use as its primary fuel source?

The heart is essentially in the middle of the chest,has a broad base at the top and tapers to a pointed tip,the apex,at the bottom.

What are the three distinct waveforms called that are found in a normal ECG?

The main effect of parasympathetic stimulation on the SA node is to speed up depolarization so that contraction is reached more rapidly.

In what fashion does healthy blood flow?

An insufficient heart valve is often called a leaky valve because it lets blood leak back through when the valve should be closed.

What is the parasympathetic nerve supply to the SA and AV nodes?

What is the beginning of an atherosclerotic plaque called?

What are the two determinants of cardiac output?

What does the first heart sound signal the onset of?

The individual cardiac muscle cells are interconnected to form branching fibers,with adjacent cells joined end to end at specialized structures called __________.

Blood returning from the systemic circulation enters the right atrium via two large veins,the __________,one returning blood from above and the other returning blood from below heart level.

What is a murmur called when it occurs between the first and the second heart sounds?

The QRS complex represents atrial depolarization.

Figure 9-14 Use the figure above (Figure 9-14)to answer the corresponding questions. -Which number in the figure represents the QRS complex (ventricular depolarization)?

Stroke volume is determined by:

What is the upper range of ventricular contractions in the human heart due to the relatively long refractory period of the AV node?

Figure 9-14 Use the figure above (Figure 9-14)to answer the corresponding questions. -Which number in the figure represents the P wave (atrial depolarization)?

Any variation from the normal rhythm and sequence of excitation of the heart is termed an arrhythmia.

Left-sided heart failure has more serious consequences than right-sided failure.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System - Afferent Division - Special Senses

The Peripheral Nervous System - Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology - the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive Systembrad

Filters

Exam 9: Cardiac Physiology

What does the heart use as its primary fuel source?

The heart is essentially in the middle of the chest,has a broad base at the top and tapers to a pointed tip,the apex,at the bottom.​

What are the three distinct waveforms called that are found in a normal ECG?

The main effect of parasympathetic stimulation on the SA node is to speed up depolarization so that contraction is reached more rapidly.​

In what fashion does healthy blood flow?

An insufficient heart valve is often called a leaky valve because it lets blood leak back through when the valve should be closed.​

What is the parasympathetic nerve supply to the SA and AV nodes?

What is the beginning of an atherosclerotic plaque called?

What are the two determinants of cardiac output?

What does the first heart sound signal the onset of?

The individual cardiac muscle cells are interconnected to form branching fibers,with adjacent cells joined end to end at specialized structures called __________.

Blood returning from the systemic circulation enters the right atrium via two large veins,the __________,one returning blood from above and the other returning blood from below heart level.​

What is a murmur called when it occurs between the first and the second heart sounds?

The QRS complex represents atrial depolarization.​

Figure 9-14 Use the figure above (Figure 9-14)to answer the corresponding questions. -Which number in the figure represents the QRS complex (ventricular depolarization)?

Stroke volume is determined by:

What is the upper range of ventricular contractions in the human heart due to the relatively long refractory period of the AV node?

Figure 9-14 Use the figure above (Figure 9-14)to answer the corresponding questions. -Which number in the figure represents the P wave (atrial depolarization)?

Any variation from the normal rhythm and sequence of excitation of the heart is termed an arrhythmia.​

Left-sided heart failure has more serious consequences than right-sided failure.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System - Afferent Division - Special Senses

The Peripheral Nervous System - Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology - the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive Systembrad

Filters

The heart is essentially in the middle of the chest,has a broad base at the top and tapers to a pointed tip,the apex,at the bottom.

The main effect of parasympathetic stimulation on the SA node is to speed up depolarization so that contraction is reached more rapidly.

An insufficient heart valve is often called a leaky valve because it lets blood leak back through when the valve should be closed.

Blood returning from the systemic circulation enters the right atrium via two large veins,the __________,one returning blood from above and the other returning blood from below heart level.

The QRS complex represents atrial depolarization.

Any variation from the normal rhythm and sequence of excitation of the heart is termed an arrhythmia.