Question 1

Venodilation

Accepted Answer

A)  increases afterload. 
B)  decreases preload. 
C)  increases end-diastolic volume. 
D)  stretches the ventricular myocardium. 
A)  increases afterload. 
B)  decreases preload. 
C)  increases end-diastolic volume. 
D)  stretches the ventricular myocardium.

Question 2

Digoxin exerts a (-)chronotropic effect and (+)inotropic effect.Which of the following describes these effects?

Accepted Answer

A)  Slows heart rate and decreases cardiac output 
B)  Increases heart rate and increases systemic vascular resistance 
C)  Decreases heart rate and decreases stroke volume 
D)  Decreases heart rate and strengthens myocardial contraction 
A)  Slows heart rate and decreases cardiac output 
B)  Increases heart rate and increases systemic vascular resistance 
C)  Decreases heart rate and decreases stroke volume 
D)  Decreases heart rate and strengthens myocardial contraction

Question 3

Milliliters/beat ´ beats/min defines

Accepted Answer

A)  stroke volume. 
B)  ejection fraction. 
C)  cardiac reserve. 
D)  cardiac output. 
A)  stroke volume. 
B)  ejection fraction. 
C)  cardiac reserve. 
D)  cardiac output.

Question 4

Jugular vein distention is most associated with

Accepted Answer

A)  right-sided heart failure. 
B)  aortic valve stenosis. 
C)  left wall infarct and left ventricular failure. 
D)  low volume shock right-sided heart failure. 
A)  right-sided heart failure. 
B)  aortic valve stenosis. 
C)  left wall infarct and left ventricular failure. 
D)  low volume shock right-sided heart failure.

Question 5

Digoxin,a drug used in the treatment of heart failure,increases contractile force and is therefore called a

Accepted Answer

A)  diuretic. 
B)  (+) dromotropic agent. 
C)  (+) inotropic agent. 
D)  (+) chronotropic agent. 
A)  diuretic. 
B)  (+) dromotropic agent. 
C)  (+) inotropic agent. 
D)  (+) chronotropic agent.

Question 6

A change in preload causes a change in myocardial contractile force.This response is known as (a)

Accepted Answer

A)  (+) inotropic effect. 
B)  (+) dromotropic effect. 
C)  Starling's law of the heart. 
D)  (-) chronotropic effect. 
A)  (+) inotropic effect. 
B)  (+) dromotropic effect. 
C)  Starling's law of the heart. 
D)  (-) chronotropic effect.

Question 7

An elevation in pulmonary artery pressure is most likely to cause

Accepted Answer

A)  pleural effusion. 
B)  pulmonary edema. 
C)  right ventricular hypertrophy. 
D)  left ventricular failure and pulmonary edema. 
A)  pleural effusion. 
B)  pulmonary edema. 
C)  right ventricular hypertrophy. 
D)  left ventricular failure and pulmonary edema.

Question 8

Which of the following is the best description of systole and diastole?

Accepted Answer

A)  Atria and ventricles 
B)  Depolarization and repolarization 
C)  Contraction and relaxation 
D)  Heart rate and stroke volume 
A)  Atria and ventricles 
B)  Depolarization and repolarization 
C)  Contraction and relaxation 
D)  Heart rate and stroke volume

Question 9

What is the term for the sequence of events that occur during one heartbeat?

Accepted Answer

A)  Stroke volume 
B)  Cardiac output 
C)  Cardiac cycle 
D)  Systole 
A)  Stroke volume 
B)  Cardiac output 
C)  Cardiac cycle 
D)  Systole

Question 10

Ventricular systole refers to

Accepted Answer

A)  ventricular depolarization. 
B)  the opening of the valves of the ventricles. 
C)  ventricular filling. 
D)  contraction of the ventricular myocardium. 
A)  ventricular depolarization. 
B)  the opening of the valves of the ventricles. 
C)  ventricular filling. 
D)  contraction of the ventricular myocardium.

Question 11

Atropine,a muscarinic blocker,

Accepted Answer

A)  increases heart rate. 
B)  causes bradycardia. 
C)  is also classified as sympathomimetic. 
D)  is vagomimetic. 
A)  increases heart rate. 
B)  causes bradycardia. 
C)  is also classified as sympathomimetic. 
D)  is vagomimetic.

Question 12

An increase in venous return causes an increase in cardiac output.This is accomplished by

Accepted Answer

A)  a (+) inotropic effect. 
B)  depolarization. 
C)  Starling's law of the heart. 
D)  a (+) chronotropic effect. 
A)  a (+) inotropic effect. 
B)  depolarization. 
C)  Starling's law of the heart. 
D)  a (+) chronotropic effect.

Question 13

Atropine is anticholinergic and antimuscarinic and therefore

Accepted Answer

A)  causes a (+) inotropic effect. 
B)  increases the force of myocardial contraction. 
C)  decreases heart rate. 
D)  is used to treat bradydysrhythmias such as heart block and a prolonged P-R interval. 
A)  causes a (+) inotropic effect. 
B)  increases the force of myocardial contraction. 
C)  decreases heart rate. 
D)  is used to treat bradydysrhythmias such as heart block and a prolonged P-R interval.

Question 14

Which of the following drugs is sympathomimetic?

Accepted Answer

A)  Beta1-adrenergic blocker 
B)  Muscarinic agonist 
C)  Vagolytic 
D)  Beta1-adrenergic agonist 
A)  Beta1-adrenergic blocker 
B)  Muscarinic agonist 
C)  Vagolytic 
D)  Beta1-adrenergic agonist

Question 15

Furosemide (Lasix),a potent diuretic,is administered in acute ventricular failure to

Accepted Answer

A)  strengthen myocardial contractile force. 
B)  increase plasma K+ levels. 
C)  excrete excess water and relieve the edema. 
D)  relieve pain. 
A)  strengthen myocardial contractile force. 
B)  increase plasma K+ levels. 
C)  excrete excess water and relieve the edema. 
D)  relieve pain.

Question 16

Which of the following defines cardiac output?

Accepted Answer

A)  Cardiac index ´ ejection fraction 
B)  Heart rate ´ stroke volume 
C)  Stroke volume ´ ejection fraction 
D)  Afterload ´ heart rate 
A)  Cardiac index ´ ejection fraction 
B)  Heart rate ´ stroke volume 
C)  Stroke volume ´ ejection fraction 
D)  Afterload ´ heart rate

Question 17

Which of the following is least likely to be used in the treatment of left ventricular failure and pulmonary edema?

Accepted Answer

A)  (+) Inotropic agent such as digoxin or dopamine 
B)  Diuretic such as furosemide (Lasix) 
C)  Peripheral vasoconstrictor such as norepinephrine (Levophed) 
D)  Oxygen 
A)  (+) Inotropic agent such as digoxin or dopamine 
B)  Diuretic such as furosemide (Lasix) 
C)  Peripheral vasoconstrictor such as norepinephrine (Levophed) 
D)  Oxygen

Question 18

What term refers to the amount of blood pumped by the ventricle in one beat?

Accepted Answer

A)  Cardiac output 
B)  Blood volume 
C)  Hematocrit 
D)  Stroke volume 
A)  Cardiac output 
B)  Blood volume 
C)  Hematocrit 
D)  Stroke volume

Question 19

Heart rate and stroke volume determine

Accepted Answer

A)  hematocrit. 
B)  total blood volume. 
C)  cardiac output. 
D)  the size of the heart valves. 
A)  hematocrit. 
B)  total blood volume. 
C)  cardiac output. 
D)  the size of the heart valves.

Exam 17: Function of the Heart

Venodilation

Digoxin exerts a (-)chronotropic effect and (+)inotropic effect.Which of the following describes these effects?

Milliliters/beat ´ beats/min defines

Jugular vein distention is most associated with

Digoxin,a drug used in the treatment of heart failure,increases contractile force and is therefore called a

A change in preload causes a change in myocardial contractile force.This response is known as (a)

An elevation in pulmonary artery pressure is most likely to cause

Which of the following is the best description of systole and diastole?

What is the term for the sequence of events that occur during one heartbeat?

Ventricular systole refers to

Atropine,a muscarinic blocker,

An increase in venous return causes an increase in cardiac output.This is accomplished by

Atropine is anticholinergic and antimuscarinic and therefore

Which of the following drugs is sympathomimetic?

Furosemide (Lasix),a potent diuretic,is administered in acute ventricular failure to

Which of the following defines cardiac output?

Which of the following is least likely to be used in the treatment of left ventricular failure and pulmonary edema?

What term refers to the amount of blood pumped by the ventricle in one beat?

Heart rate and stroke volume determine

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

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