Question 1

Which of the following is most likely to relieve an anxiety-induced tachycardia?

Accepted Answer

A)  Vagolytic drug 
B)  Beta1-adrenergic agonist 
C)  Sympathomimetic 
D)  Beta1-adrenergic blocker 
A)  Vagolytic drug 
B)  Beta1-adrenergic agonist 
C)  Sympathomimetic 
D)  Beta1-adrenergic blocker D

Question 2

Which of the following refers to a positive inotropic effect?

Accepted Answer

A)  Heart block 
B)  A slow heart rate 
C)  A rapid heartbeat 
D)  An increased myocardial contractile force 
A)  Heart block 
B)  A slow heart rate 
C)  A rapid heartbeat 
D)  An increased myocardial contractile force D

Question 3

A drug causes a (+)inotropic effect,a (-)dromotropic effect,and a (-)chronotropic effect.What drug response would you expect to observe?

Accepted Answer

A)  Tachycardia 
B)  Low blood pressure 
C)  Ankle edema 
D)  Slow heart rate 
A)  Tachycardia 
B)  Low blood pressure 
C)  Ankle edema 
D)  Slow heart rate D

Question 4

Which of the following statements is correct about cardiac output?

Accepted Answer

A)  Cardiac output is determined by the heart rate and pulse. 
B)  Stimulation of the sympathetic nerves decreases cardiac output. 
C)  Vagal discharge increases cardiac output. 
D)  Cardiac output is determined by heart rate and stroke volume. 
A)  Cardiac output is determined by the heart rate and pulse. 
B)  Stimulation of the sympathetic nerves decreases cardiac output. 
C)  Vagal discharge increases cardiac output. 
D)  Cardiac output is determined by heart rate and stroke volume.

Question 5

Excess vagal stimulation to the SA node is most likely to cause

Accepted Answer

A)  hypertension. 
B)  bradycardia. 
C)  tachycardia. 
D)  anemia. 
A)  hypertension. 
B)  bradycardia. 
C)  tachycardia. 
D)  anemia.

Question 6

What is the term that refers to an increase in stroke volume in response to the stretching of the heart?

Accepted Answer

A)  Starling's law of the heart 
B)  A positive inotropic effect 
C)  Heart block 
D)  Angina pectoris 
A)  Starling's law of the heart 
B)  A positive inotropic effect 
C)  Heart block 
D)  Angina pectoris

Question 7

The amount of blood in the ventricle at the end of its resting phase is the

Accepted Answer

A)  end-diastolic volume (EDV). 
B)  amount of blood in the ventricle at the end of its resting phase. 
C)  preload. 
D)  All of the above are true. 
A)  end-diastolic volume (EDV). 
B)  amount of blood in the ventricle at the end of its resting phase. 
C)  preload. 
D)  All of the above are true.

Question 8

Which of the following is an example of forward failure?

Accepted Answer

A)  Blood accumulates in the pulmonary capillaries, elevating pressure and causing pulmonary edema. 
B)  Diminished renal blood flow stimulates the kidney to decrease urinary output and retain Na+ and water. 
C)  Blood distends the jugular vein. 
D)  Blood distends the liver, causing hepatomegaly and digestive symptoms. 
A)  Blood accumulates in the pulmonary capillaries, elevating pressure and causing pulmonary edema. 
B)  Diminished renal blood flow stimulates the kidney to decrease urinary output and retain Na+ and water. 
C)  Blood distends the jugular vein. 
D)  Blood distends the liver, causing hepatomegaly and digestive symptoms.

Question 9

Which of the following is most apt to induce an autonomically induced bradycardia?

Accepted Answer

A)  Secretion of norepinephrine by the postganglionic adrenergic fibers 
B)  Activation of the beta1-adrenergic receptors 
C)  Activation of the muscarinic receptors 
D)  Sympathetic nerve stimulation 
A)  Secretion of norepinephrine by the postganglionic adrenergic fibers 
B)  Activation of the beta1-adrenergic receptors 
C)  Activation of the muscarinic receptors 
D)  Sympathetic nerve stimulation

Question 10

Decreased blood flow through the coronary arteries is most likely to cause

Accepted Answer

A)  valve damage. 
B)  pulmonary edema. 
C)  angina pectoris. 
D)  bradycardia. 
A)  valve damage. 
B)  pulmonary edema. 
C)  angina pectoris. 
D)  bradycardia.

Question 11

Vagal stimulation to the heart causes

Accepted Answer

A)  a (+) inotropic effect. 
B)  heart rate to slow. 
C)  cardiac output to increase. 
D)  stroke volume to increase. 
A)  a (+) inotropic effect. 
B)  heart rate to slow. 
C)  cardiac output to increase. 
D)  stroke volume to increase.

Question 12

An ejection fraction of 30% is

Accepted Answer

A)  normal. 
B)  characteristic of a healthy person who is engaged in aerobic exercise. 
C)  characteristic of a failing heart. 
D)  the amount of oxygenated hemoglobin in the blood in the left ventricle. 
A)  normal. 
B)  characteristic of a healthy person who is engaged in aerobic exercise. 
C)  characteristic of a failing heart. 
D)  the amount of oxygenated hemoglobin in the blood in the left ventricle.

Question 13

Most of the symptoms of acute left-sided heart failure are

Accepted Answer

A)  relieved by morphine. 
B)  cured by an antibiotic. 
C)  respiratory in nature (e.g., dyspnea, orthopnea). 
D)  confined to the lower extremities, as in pedal edema. 
A)  relieved by morphine. 
B)  cured by an antibiotic. 
C)  respiratory in nature (e.g., dyspnea, orthopnea). 
D)  confined to the lower extremities, as in pedal edema.

Question 14

What happens during ventricular diastole?

Accepted Answer

A)  The ventricles are filling with blood. 
B)  All semilunar valves are open. 
C)  Both AV valves are closed. 
D)  Blood is pumped to the lungs and systemic circulation. 
A)  The ventricles are filling with blood. 
B)  All semilunar valves are open. 
C)  Both AV valves are closed. 
D)  Blood is pumped to the lungs and systemic circulation.

Question 15

Atropine is a muscarinic antagonist and is therefore used to

Accepted Answer

A)  relieve bradycardia. 
B)  decrease heart rate. 
C)  block the effects of norepinephrine. 
D)  increase myocardial contractile force. 
A)  relieve bradycardia. 
B)  decrease heart rate. 
C)  block the effects of norepinephrine. 
D)  increase myocardial contractile force.

Question 16

With which term is afterload most associated?

Accepted Answer

A)  Preload 
B)  End-diastolic volume 
C)  Resistance 
D)  Hypoxemia 
A)  Preload 
B)  End-diastolic volume 
C)  Resistance 
D)  Hypoxemia

Question 17

Which of the following is descriptive of a drug that causes a (+)inotropic effect,a (+)dromotropic effect,and a (+)chronotropic effect?

Accepted Answer

A)  Vagomimetic 
B)  Sympathomimetic 
C)  Antimuscarinic 
D)  Vagolytic 
A)  Vagomimetic 
B)  Sympathomimetic 
C)  Antimuscarinic 
D)  Vagolytic

Question 18

Which of the following is descriptive of the vagus nerve?

Accepted Answer

A)  Fight-or-flight 
B)  Parasympathetic 
C)  Sympathetic 
D)  Adrenergic 
A)  Fight-or-flight 
B)  Parasympathetic 
C)  Sympathetic 
D)  Adrenergic

Question 19

Which of the following is the most likely consequence of acute left ventricular failure?

Accepted Answer

A)  Jugular vein distention 
B)  Hepatomegaly and splenomegaly 
C)  Pulmonary edema 
D)  Pedal edema 
A)  Jugular vein distention 
B)  Hepatomegaly and splenomegaly 
C)  Pulmonary edema 
D)  Pedal edema

Question 20

Which of the following does not happen during ventricular diastole?

Accepted Answer

A)  Blood is being pumped into the great vessels. 
B)  The semilunar valves are closed. 
C)  Blood is filling the ventricles. 
D)  Blood is flowing from the atria into the ventricles. 
A)  Blood is being pumped into the great vessels. 
B)  The semilunar valves are closed. 
C)  Blood is filling the ventricles. 
D)  Blood is flowing from the atria into the ventricles.

Exam 17: Function of the Heart

Which of the following is most likely to relieve an anxiety-induced tachycardia?

Which of the following refers to a positive inotropic effect?

A drug causes a (+)inotropic effect,a (-)dromotropic effect,and a (-)chronotropic effect.What drug response would you expect to observe?

Which of the following statements is correct about cardiac output?

Excess vagal stimulation to the SA node is most likely to cause

What is the term that refers to an increase in stroke volume in response to the stretching of the heart?

The amount of blood in the ventricle at the end of its resting phase is the

Which of the following is an example of forward failure?

Which of the following is most apt to induce an autonomically induced bradycardia?

Decreased blood flow through the coronary arteries is most likely to cause

Vagal stimulation to the heart causes

An ejection fraction of 30% is

Most of the symptoms of acute left-sided heart failure are

What happens during ventricular diastole?

Atropine is a muscarinic antagonist and is therefore used to

With which term is afterload most associated?

Which of the following is descriptive of a drug that causes a (+)inotropic effect,a (+)dromotropic effect,and a (+)chronotropic effect?

Which of the following is descriptive of the vagus nerve?

Which of the following is the most likely consequence of acute left ventricular failure?

Which of the following does not happen during ventricular diastole?

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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