Question 1

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 2

Systole and diastole describe the function of the

Accepted Answer

A) pericardium. 
B) SA node. 
C) myocardium. 
D) mediastinum. 
A) pericardium. 
B) SA node. 
C) myocardium. 
D) mediastinum. C

Question 3

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 C

Question 4

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 5

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 6

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.

Question 7

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 8

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 9

With which of the following is inotropism most associated?

Accepted Answer

A) Heart rate 
B) Force of myocardial contraction 
C) Oxygen saturation 
D) Systemic vascular resistance 
A) Heart rate 
B) Force of myocardial contraction 
C) Oxygen saturation 
D) Systemic vascular resistance

Question 10

Cardiac output is determined by heart rate and

Accepted Answer

A) systemic vascular resistance. 
B) stroke volume. 
C) hematocrit. 
D) hemoglobin concentration. 
A) systemic vascular resistance. 
B) stroke volume. 
C) hematocrit. 
D) hemoglobin concentration.

Question 11

Which of the following is responsible for the Starling effect?

Accepted Answer

A) Sympathetic nerve firing 
B) Vagal discharge 
C) Activation of the Beta₁-adrenergic receptors 
D) End-diastolic volume (EDV) or preload 
A) Sympathetic nerve firing 
B) Vagal discharge 
C) Activation of the Beta₁-adrenergic receptors 
D) End-diastolic volume (EDV) or preload

Question 12

Which of the following is most likely to increase ejection fraction?

Accepted Answer

A) Activation of Beta₁-adrenergic receptors 
B) Vagal discharge 
C) Blockade of Beta₁-adrenergic receptors 
D) Activation of the muscarinic receptors 
A) Activation of Beta₁-adrenergic receptors 
B) Vagal discharge 
C) Blockade of Beta₁-adrenergic receptors 
D) Activation of the muscarinic receptors

Question 13

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 14

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 15

Which term refers to a heart rate less than 60 beats/min?

Accepted Answer

A) Bradycardia 
B) Heart block 
C) Fight-or-flight response 
D) Tachycardia 
A) Bradycardia 
B) Heart block 
C) Fight-or-flight response 
D) Tachycardia

Question 16

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 17

Cor pulmonale refers to

Accepted Answer

A) elevation in pulmonary artery pressure and right ventricular hypertrophy. 
B) backward failure and pulmonary edema. 
C) pulmonary edema. 
D) a major cause of left ventricular failure. 
A) elevation in pulmonary artery pressure and right ventricular hypertrophy. 
B) backward failure and pulmonary edema. 
C) pulmonary edema. 
D) a major cause of left ventricular failure.

Question 18

Which of the following is approximately 70 mL?

Accepted Answer

A) The cardiac output 
B) The volume of a ventricle 
C) An average stroke volume 
D) The amount of blood that flows through the pulmonary capillaries in one minute 
A) The cardiac output 
B) The volume of a ventricle 
C) An average stroke volume 
D) The amount of blood that flows through the pulmonary capillaries in one minute

Question 19

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 20

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.

Exam 17: Function of the Heart

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

Systole and diastole describe the function of the

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

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

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

Which of the following does not happen during ventricular diastole?

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

Ventricular systole refers to

With which of the following is inotropism most associated?

Cardiac output is determined by heart rate and

Which of the following is responsible for the Starling effect?

Which of the following is most likely to increase ejection fraction?

Which of the following is descriptive of the vagus nerve?

Which of the following is an example of forward failure?

Which term refers to a heart rate less than 60 beats/min?

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

Cor pulmonale refers to

Which of the following is approximately 70 mL?

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

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

Introduction to the Human Body

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Integumentary System and Body Temperature

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Anatomy of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

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Water, Electrolyte, and Acidbase Balance

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