Question 1

Atrial repolarization does not occur.

Accepted Answer

A) True 
 B)False

Question 2

What component of the cardiac conduction system distributes electrical signals through the papillary muscles directly?

Accepted Answer

A)  AV nodes. 
B)  AV bundle. 
C)  bundle of His. 
D)  Purkinje fibers. 
E)  SA node. 
A)  AV nodes. 
B)  AV bundle. 
C)  bundle of His. 
D)  Purkinje fibers. 
E)  SA node.

Question 3

The sinoatrial node is the heart's normal pacemaker because

Accepted Answer

A)  it has the fastest natural rate of autorhythmicity. 
B)  it has both sympathetic and parasympathetic innervation. 
C)  it lies in the right atrium. 
D)  activation of K+ channels occurs more rapidly in this region than elsewhere in the heart. 
E)  none of these answers. 
A)  it has the fastest natural rate of autorhythmicity. 
B)  it has both sympathetic and parasympathetic innervation. 
C)  it lies in the right atrium. 
D)  activation of K+ channels occurs more rapidly in this region than elsewhere in the heart. 
E)  none of these answers.

Question 4

Use the following answer code to compare the magnitude of the items in question.
-A. duration of diastole at resting heart rate
B. duration of diastole at rapid heart rate during exercise

Accepted Answer

A) A is greater than B 
B) B is greater than A 
C) A and B are equal 
A) A is greater than B 
B) B is greater than A 
C) A and B are equal

Question 5

Electrical activity occurs at the AV node

Accepted Answer

A)  during the P wave. 
B)  between the P wave and QRS complex. 
C)  during the QRS complex. 
D)  between the QRS complex and T wave. 
E)  during the T wave. 
A)  during the P wave. 
B)  between the P wave and QRS complex. 
C)  during the QRS complex. 
D)  between the QRS complex and T wave. 
E)  during the T wave.

Question 6

MATCHING: ART
   
The following questions refer to the accompanying diagram of the heart. Eight structures (vessels or chambers) labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram.
-pulmonary arteries

Accepted Answer

The answer of MATCHING: ART
   
The following questions...

Question 7

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code:
-increases cardiac output

Accepted Answer

A) an effect caused by sympathetic stimulation 
B) an effect caused by parasympathetic stimulation 
C) not brought about by either sympathetic or parasympathetic stimulation 
A) an effect caused by sympathetic stimulation 
B) an effect caused by parasympathetic stimulation 
C) not brought about by either sympathetic or parasympathetic stimulation

Question 8

Use the following answer code to compare the magnitude of the items in question.
-A. volume of blood pumped out by the left side of the heart
B. volume of blood pumped out by the right side of the heart

Accepted Answer

A) A is greater than B 
B) B is greater than A 
C) A and B are equal 
A) A is greater than B 
B) B is greater than A 
C) A and B are equal

Question 9

The heart utilizes glucose almost exclusively for energy production.

Accepted Answer

A) True 
 B)False

Question 10

Semilunar valves

Accepted Answer

A)  prevent backflow of blood from the ventricles to the atria. 
B)  prevent backflow of blood from the atria to the ventricles. 
C)  prevent backflow of blood from the ventricles to the arterial trunks. 
D)  prevent backflow of blood from the arterial trunks to the ventricles. 
E)  none of these answers. 
A)  prevent backflow of blood from the ventricles to the atria. 
B)  prevent backflow of blood from the atria to the ventricles. 
C)  prevent backflow of blood from the ventricles to the arterial trunks. 
D)  prevent backflow of blood from the arterial trunks to the ventricles. 
E)  none of these answers.

Question 11

Stroke volume can vary by alterations in both intrinsic and extrinsic control mechanisms.

Accepted Answer

A) True 
 B)False

Question 12

During isovolumetric ventricular contraction,

Accepted Answer

A)  rapid filling of the ventricles occurs. 
B)  all heart valves are closed 
C)  the maximum volume of blood is ejected. 
D)  the maximum rate of ejection occurs. 
E)  the atria are in systole 
A)  rapid filling of the ventricles occurs. 
B)  all heart valves are closed 
C)  the maximum volume of blood is ejected. 
D)  the maximum rate of ejection occurs. 
E)  the atria are in systole

Question 13

The cardiac output is the same as the cardiac reserve of the heart.

Accepted Answer

A) True 
 B)False

Question 14

Use the following answer code to compare the magnitude of the items in question.
-A. duration of systole at resting heart rate
B. duration of systole at rapid heart rate during exercise

Accepted Answer

A) A is greater than B 
B) B is greater than A 
C) A and B are equal 
A) A is greater than B 
B) B is greater than A 
C) A and B are equal

Question 15

The functional syncytia of the myocardium is offered by the intercalated discs.

Accepted Answer

A) True 
 B)False

Question 16

Indicate which is the proper sequence of blood flow through the circulatory system. 1. right atrium
2. left atrium
3. right ventricle
4. left ventricle
5. pulmonary artery
6. pulmonary vein
7. lungs
8. systemic tissues
9. aorta
10. vena cava

Accepted Answer

A)  1-2-3-4-5-6-7-8-9-10 
B)  10-2-4-5-7-6-1-3-9-8 
C)  10-1-3-5-7-6-2-4-9-8 
D)  10-1-2-3-4-5-7-6-9-8 
E)  none of these answers. 
A)  1-2-3-4-5-6-7-8-9-10 
B)  10-2-4-5-7-6-1-3-9-8 
C)  10-1-3-5-7-6-2-4-9-8 
D)  10-1-2-3-4-5-7-6-9-8 
E)  none of these answers.

Question 17

Match heart characteristic with correct anatomical structure. Choices may be used more than once or not at all.
-the ventricles' left is much thicker

Accepted Answer

A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node 
A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node

Question 18

Forward failure is when the heart fails to pump an adequate amount of blood forward to the tissues because the stroke volume becomes progressively smaller.

Accepted Answer

A) True 
 B)False

Question 19

What percentage of ventricular filling is normally accomplished before atrial contraction begins?

Accepted Answer

A)  0% 
B)  20% 
C)  80% 
D)  50% 
E)  100% 
A)  0% 
B)  20% 
C)  80% 
D)  50% 
E)  100%

Question 20

The ventricles always depolarize at the same rate as the SA node depolarizes.

Accepted Answer

A) True 
 B)False

Atrial repolarization does not occur.

What component of the cardiac conduction system distributes electrical signals through the papillary muscles directly?

The sinoatrial node is the heart's normal pacemaker because

Use the following answer code to compare the magnitude of the items in question. -A. duration of diastole at resting heart rate B. duration of diastole at rapid heart rate during exercise

Electrical activity occurs at the AV node

MATCHING: ART The following questions refer to the accompanying diagram of the heart. Eight structures (vessels or chambers) labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram. -pulmonary arteries

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code: -increases cardiac output

Use the following answer code to compare the magnitude of the items in question. -A. volume of blood pumped out by the left side of the heart B. volume of blood pumped out by the right side of the heart

The heart utilizes glucose almost exclusively for energy production.

Semilunar valves

Stroke volume can vary by alterations in both intrinsic and extrinsic control mechanisms.

During isovolumetric ventricular contraction,

The cardiac output is the same as the cardiac reserve of the heart.

Use the following answer code to compare the magnitude of the items in question. -A. duration of systole at resting heart rate B. duration of systole at rapid heart rate during exercise

The functional syncytia of the myocardium is offered by the intercalated discs.

Indicate which is the proper sequence of blood flow through the circulatory system. 1. right atrium 2. left atrium 3. right ventricle 4. left ventricle 5. pulmonary artery 6. pulmonary vein 7. lungs 8. systemic tissues 9. aorta 10. vena cava

Match heart characteristic with correct anatomical structure. Choices may be used more than once or not at all. -the ventricles' left is much thicker

Forward failure is when the heart fails to pump an adequate amount of blood forward to the tissues because the stroke volume becomes progressively smaller.

What percentage of ventricular filling is normally accomplished before atrial contraction begins?

The ventricles always depolarize at the same rate as the SA node depolarizes.

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 and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

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Exam 9: Cardiac Physiology

Atrial repolarization does not occur.

What component of the cardiac conduction system distributes electrical signals through the papillary muscles directly?

The sinoatrial node is the heart's normal pacemaker because

Use the following answer code to compare the magnitude of the items in question. -A. duration of diastole at resting heart rate B. duration of diastole at rapid heart rate during exercise

Electrical activity occurs at the AV node

MATCHING: ART The following questions refer to the accompanying diagram of the heart. Eight structures (vessels or chambers) labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram. -pulmonary arteries

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code: -increases cardiac output

Use the following answer code to compare the magnitude of the items in question. -A. volume of blood pumped out by the left side of the heart B. volume of blood pumped out by the right side of the heart

The heart utilizes glucose almost exclusively for energy production.

Semilunar valves

Stroke volume can vary by alterations in both intrinsic and extrinsic control mechanisms.

During isovolumetric ventricular contraction,

The cardiac output is the same as the cardiac reserve of the heart.

Use the following answer code to compare the magnitude of the items in question. -A. duration of systole at resting heart rate B. duration of systole at rapid heart rate during exercise

The functional syncytia of the myocardium is offered by the intercalated discs.

Indicate which is the proper sequence of blood flow through the circulatory system. 1. right atrium 2. left atrium 3. right ventricle 4. left ventricle 5. pulmonary artery 6. pulmonary vein 7. lungs 8. systemic tissues 9. aorta 10. vena cava

Match heart characteristic with correct anatomical structure. Choices may be used more than once or not at all. -the ventricles' left is much thicker

Forward failure is when the heart fails to pump an adequate amount of blood forward to the tissues because the stroke volume becomes progressively smaller.

What percentage of ventricular filling is normally accomplished before atrial contraction begins?

The ventricles always depolarize at the same rate as the SA node depolarizes.

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 and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters