Question 1

The heart utilizes glucose almost exclusively for energy production.

Accepted Answer

A) True 
 B)False

Question 2

High blood pressure decreases the afterload and increases the preload.

Accepted Answer

A) True 
 B)False

Question 3

The parasympathetic nervous system has little effect on ____ activity.

Accepted Answer

A)  atrial 
B)  AV node 
C)  heart rate 
D)  SA node 
E)  ventricular 
A)  atrial 
B)  AV node 
C)  heart rate 
D)  SA node 
E)  ventricular

Question 4

Complete each of the following statments.
The ____________________ extracts cholesterol from the blood and converts it into ____________________, which are secreted into the bile.

Accepted Answer

The answer of Complete each of the following statments.
The ____________________...

Question 5

The first heart sound

Accepted Answer

A)  occurs when the AV valves open 
B)  occurs when the semilunar valves close 
C)  signals the onset of ventricular diastole 
D)  occurs when the AV valves close, and signals the onset of ventricular systole 
E)  occurs when the semilunar valves close, and signals the onset of ventricular diastole 
A)  occurs when the AV valves open 
B)  occurs when the semilunar valves close 
C)  signals the onset of ventricular diastole 
D)  occurs when the AV valves close, and signals the onset of ventricular systole 
E)  occurs when the semilunar valves close, and signals the onset of ventricular diastole

Question 6

The electrocardiogram is most useful in determining which component of cardiac output?

Accepted Answer

A)  stroke volume 
B)  heart rate 
C)  ejection fraction 
D)  end-diastolic volume 
E)  murmurs 
A)  stroke volume 
B)  heart rate 
C)  ejection fraction 
D)  end-diastolic volume 
E)  murmurs

Question 7

Atrial systole is responsible for the first heart sound, whereas the ventricular systole is responsible for the second heart sound.

Accepted Answer

A) True 
 B)False

Question 8

A metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile is

Accepted Answer

A)  HDL 
B)  VLDL 
C)  homocysteine 
D)  methionine 
E)  creatine 
A)  HDL 
B)  VLDL 
C)  homocysteine 
D)  methionine 
E)  creatine

Question 9

The AV nodal delay ensures that:

Accepted Answer

A)  The atria contract and empty their contents into the ventricles prior to ventricular systole. 
B)  The ventricles contract prior to atrial systole. 
C)  Tetanic contractions of cardiac muscle are impossible. 
D)  Ventricular diastole occurs before systole. 
E)  Atrial diastole occurs before atrial systole. 
A)  The atria contract and empty their contents into the ventricles prior to ventricular systole. 
B)  The ventricles contract prior to atrial systole. 
C)  Tetanic contractions of cardiac muscle are impossible. 
D)  Ventricular diastole occurs before systole. 
E)  Atrial diastole occurs before atrial systole.

Question 10

The right half of the heart pumps blood through the ____ circuit and the left half pumps blood through the ____ circuit.

Accepted Answer

A)  systolic; diastolic 
B)  coronary; pulmonary 
C)  systemic; pulmonary 
D)  pulmonary; systemic 
E)  systemic; coronary 
A)  systolic; diastolic 
B)  coronary; pulmonary 
C)  systemic; pulmonary 
D)  pulmonary; systemic 
E)  systemic; coronary

Question 11

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 12

The normal pacemaker of the heart is the

Accepted Answer

A)  SA node 
B)  AV node 
C)  bundle of His 
D)  Purkinje system 
E)  ventricular myocardium 
A)  SA node 
B)  AV node 
C)  bundle of His 
D)  Purkinje system 
E)  ventricular myocardium

Question 13

Complete each of the following statments.
The ____________________ delay ensures that atrial systole is complete before ventricular systole begins.

Accepted Answer

The answer of Complete each of the following statments.
The ____________________...

Question 14

A heart valve opens and closes due to

Accepted Answer

A)  being pulled by the heart muscle 
B)  pressure differences on the valve's two sides 
C)  Na+ and K+ fluxes during ventricular depolarization 
D)  turbulent flow in the atria and ventricles 
E)  none of these 
A)  being pulled by the heart muscle 
B)  pressure differences on the valve's two sides 
C)  Na+ and K+ fluxes during ventricular depolarization 
D)  turbulent flow in the atria and ventricles 
E)  none of these

Question 15

Atrial systole contributes most of a ventricle's EDV.

Accepted Answer

A) True 
 B)False

Question 16

The second heart sound is produced by the

Accepted Answer

A)  opening of the AV valves 
B)  closing of the AV valves 
C)  opening of the semilunar valves 
D)  closing of the semilunar valves 
E)  blood rushing through the AV valves during diastole, creating a turbulent flow 
A)  opening of the AV valves 
B)  closing of the AV valves 
C)  opening of the semilunar valves 
D)  closing of the semilunar valves 
E)  blood rushing through the AV valves during diastole, creating a turbulent flow

Question 17

Parasympathetic stimulation of the heart increases cardiac reserve by allowing more time for the heart to relax between contractions.

Accepted Answer

The answer of Parasympathetic stimulation of the heart increases cardiac...

Question 18

Pacemaker activity by the Purkinje fibers is an example of an ectopic focus.

Accepted Answer

A) True 
 B)False

Question 19

Complete each of the following statments.
The ____________________ are the kinds of blood vessels that experience congestion for congestive heart failure.

Accepted Answer

The answer of Complete each of the following statments.
The ____________________...

Question 20

The heart chamber that has the greatest work load is

Accepted Answer

A)  the right ventricle 
B)  the left ventricle 
C)  the left atrium 
D)  the right atrium 
E)  both atria 
A)  the right ventricle 
B)  the left ventricle 
C)  the left atrium 
D)  the right atrium 
E)  both atria

Exam 9: A--Cardiac Physiology

The heart utilizes glucose almost exclusively for energy production.

High blood pressure decreases the afterload and increases the preload.

The parasympathetic nervous system has little effect on ____ activity.

Complete each of the following statments. The ____________________ extracts cholesterol from the blood and converts it into ____________________, which are secreted into the bile.

The first heart sound

The electrocardiogram is most useful in determining which component of cardiac output?

Atrial systole is responsible for the first heart sound, whereas the ventricular systole is responsible for the second heart sound.

A metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile is

The AV nodal delay ensures that:

The right half of the heart pumps blood through the ____ circuit and the left half pumps blood through the ____ circuit.

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

The normal pacemaker of the heart is the

Complete each of the following statments. The ____________________ delay ensures that atrial systole is complete before ventricular systole begins.

A heart valve opens and closes due to

Atrial systole contributes most of a ventricle's EDV.

The second heart sound is produced by the

Parasympathetic stimulation of the heart increases cardiac reserve by allowing more time for the heart to relax between contractions.

Pacemaker activity by the Purkinje fibers is an example of an ectopic focus.

Complete each of the following statments. The ____________________ are the kinds of blood vessels that experience congestion for congestive heart failure.

The heart chamber that has the greatest work load is

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Complete each of the following statments. The extracts cholesterol from the blood and converts it into , which are secreted into the bile.

The right half of the heart pumps blood through the circuit and the left half pumps blood through the circuit.