Question 1

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 C

Question 2

Which of the following most accurately describes the vagus nerve?

Accepted Answer

A)  "fight or flight" 
B)  norepinephrine 
C)  parasympathetic 
D)  causes tachycardia 
A)  "fight or flight" 
B)  norepinephrine 
C)  parasympathetic 
D)  causes tachycardia C

Question 3

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. B

Question 4

Activation of the muscarinic receptors by acetylcholine

Accepted Answer

A)  increases myocardial contractile force 
B)  causes a (+)chronotropic effect 
C)  increases cardiac output 
D)  slows heart rate 
A)  increases myocardial contractile force 
B)  causes a (+)chronotropic effect 
C)  increases cardiac output 
D)  slows heart rate

Question 5

Which of the following is most likely to increase stroke volume?

Accepted Answer

A)  a (+)inotropic drug 
B)  a vagolytic drug 
C)  a (-)chronotropic drug 
D)  a beta1 adrenergic blocker 
A)  a (+)inotropic drug 
B)  a vagolytic drug 
C)  a (-)chronotropic drug 
D)  a beta1 adrenergic blocker

Question 6

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	to 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	to retain Na+ and water. 
C)  Blood distends the jugular vein. 
D)  Blood distends the liver,causing hepatomegaly and digestive symptoms.

Question 7

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 8

Cardiac output

Accepted Answer

A)  is determined by heart rate and pulse. 
B)  decreases in response to sympathetic nerve stimulation. 
C)  increases in response to vagal discharge. 
D)  is determined by heart rate and stroke volume. 
A)  is determined by heart rate and pulse. 
B)  decreases in response to sympathetic nerve stimulation. 
C)  increases in response to vagal discharge. 
D)  is determined by heart rate and stroke volume.

Question 9

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 10

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 11

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 12

Increased return of the blood to the heart stretches the muscle,thereby

Accepted Answer

A)  stimulating the sympathetic nerve. 
B)  activating the beta1 adrenergic receptors. 
C)  closing the AV valves. 
D)  increasing stroke volume. 
A)  stimulating the sympathetic nerve. 
B)  activating the beta1 adrenergic receptors. 
C)  closing the AV valves. 
D)  increasing stroke volume.

Question 13

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 14

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)  blockade of the muscarinic receptors 
A)  activation of beta1 adrenergic receptors 
B)  vagal discharge 
C)  blockade of beta1 adrenergic receptors 
D)  blockade of the muscarinic receptors

Question 15

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 16

This term refers to a heart rate of fewer 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 17

A drug (i.e.,atropine)that blocks the vagus nerve

Accepted Answer

A)  stops the heart. 
B)  increases heart rate. 
C)  decreases cardiac output. 
D)  decreases stroke volume. 
A)  stops the heart. 
B)  increases heart rate. 
C)  decreases cardiac output. 
D)  decreases stroke volume.

Question 18

Sympathetic stimulation to the heart

Accepted Answer

A)  decreases stroke volume. 
B)  increases heart rate. 
C)  causes bradycardia. 
D)  decreases cardiac output. 
A)  decreases stroke volume. 
B)  increases heart rate. 
C)  causes bradycardia. 
D)  decreases cardiac output.

Question 19

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) 
A)  sympathetic nerve firing 
B)  vagal discharge 
C)  activation of the beta1 adrenergic receptors 
D)  end diastolic volume (EDV)

Question 20

Which of the following is the same as end diastolic volume?

Accepted Answer

A)  stroke volume 
B)  cardiac output 
C)  preload 
D)  cardiac reserve 
A)  stroke volume 
B)  cardiac output 
C)  preload 
D)  cardiac reserve

Exam 17: Function of the Heart

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

Which of the following most accurately describes the vagus nerve?

Vagal stimulation to the heart causes

Activation of the muscarinic receptors by acetylcholine

Which of the following is most likely to increase stroke volume?

Which of the following is an example of forward failure?

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

Cardiac output

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

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

What happens during ventricular diastole?

Increased return of the blood to the heart stretches the muscle,thereby

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

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

Which of the following is descriptive of the vagus nerve?

This term refers to a heart rate of fewer than 60 beats/min.

A drug (i.e.,atropine)that blocks the vagus nerve

Sympathetic stimulation to the heart

Which of the following is responsible for the Starling effect?

Which of the following is the same as end diastolic volume?

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

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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