Question 1

Match the intracardiac pressures with their description.
-Produced because of descent of the tricuspid valve ring and by ejection of blood from both ventricles

Accepted Answer

A)  a wave
B)  v wave
C)  c wave
D)  x descent
E)  y descentF) D) and E)
G) C) and D)

Question 2

Match the description with the corresponding terms.
-Cross-bridge theory

Accepted Answer

A)  Relationship among blood flow, pressure, and resistance
B)  Increased heart rate from increased volume
C)  Relationship of wall tension intraventricular pressure, internal radius, and wall thickness
D)  Cycles of attachment, movement, and dissociation of thin filaments during the attachments of actin to myosin
E)  Length-tension relationship of cardiac muscleF) C) and E)
G) A) and E)

Question 3

When the volume of blood in the ventricle at the end of diastole increases, the force of the myocardial contraction during the next systole will also increase.This is an example of which law or theory about the heart?

Accepted Answer

A)  Laplace's law
B)  Poiseuille's formula
C)  Cross-bridge theory
D)  Frank-Starling lawE) All of the above
F) None of the above

Question 4

Veins are less compliant than arteries.

Accepted Answer

A) True 
 B)False

Question 5

Which natriuretic peptide inhibits antidiuretic hormone by increasing urine sodium loss?

Accepted Answer

A)  Urodilatin
B)  Brain natriuretic peptide (BNP) 
C)  Atrial natriuretic peptide (ANP) 
D)  C-type natriuretic peptide (CNP) E) C) and D)
F) None of the above

Question 6

The cardiac electrical impulse normally begins spontaneously in the sinoatrial (SA)  node because:

Accepted Answer

A)  of its superior location in the right atrium.
B)  it is the only area of the heart capable of spontaneous depolarization.
C)  it has rich sympathetic innervation via the vagus nerve.
D)  it depolarizes more rapidly than other automatic cells of the heart.E) B) and D)
F) All of the above

Question 7

Match the description with the corresponding terms.
-Bainbridge reflex

Accepted Answer

A)  Relationship among blood flow, pressure, and resistance
B)  Increased heart rate from increased volume
C)  Relationship of wall tension intraventricular pressure, internal radius, and wall thickness
D)  Cycles of attachment, movement, and dissociation of thin filaments during the attachments of actin to myosin
E)  Length-tension relationship of cardiac muscleF) A) and B)
G) A) and C)

Question 8

What is an expected change in the cardiovascular system that occurs with aging?

Accepted Answer

A)  Arterial stiffening
B)  Decreased left ventricular wall tension
C)  Decreased aortic wall thickness
D)  ArteriosclerosisE) All of the above
F) C) and D)

Question 9

Which of the following statements does not accurately describe the pericardium?

Accepted Answer

A)  It is a double-walled membranous sac that encloses the heart.
B)  It is composed of connective tissue and a surface layer of squamous cells.
C)  It protects the heart against infection and inflammation from the lungs and pleural space.
D)  It contains pain and mechanoreceptors that can elicit reflex changes in blood pressure and heart rate.E) A) and D)
F) None of the above

Question 10

The coronary sinus empties into the:

Accepted Answer

A)  right atrium.
B)  left atrium.
C)  superior vena cava.
D)  aorta.E) All of the above
F) None of the above

Question 11

Myogenic regulation of blood vessel diameter and subsequent blood flow through a vessel is an example of _____ of blood vessels.

Accepted Answer

A)  autonomic regulation
B)  somatic regulation
C)  autoregulation
D)  metabolic regulationE) C) and D)
F) A) and B)

Question 12

The _____ complex (wave)  represents the sum of all ventricular muscle cell depolarizations.

Accepted Answer

A)  PRS
B)  QRS
C)  QT interval
D)  PE) B) and C)
F) C) and D)

Question 13

The aortic valve obstructs coronary blood flow by pushing against the openings of the coronary arteries during systole.

Accepted Answer

A) True 
 B)False

Question 14

Which chamber of the heart endures the highest pressures?

Accepted Answer

A)  Right atrium
B)  Left atrium
C)  Left ventricle
D)  Right ventricleE) A) and B)
F) All of the above

Question 15

The arteries in the peripheral vasculature system are less able to stretch and recoil than the arteries of the great vessels.

Accepted Answer

A) True 
 B)False

Question 16

As stated by the Frank-Starling law, there is a direct relationship between the _____ of the blood in the heart at the end of diastole and the _____ of contraction during the next systole.

Accepted Answer

A)  pressure; force
B)  volume; strength
C)  viscosity; force
D)  viscosity; strengthE) C) and D)
F) B) and C)

Question 17

Metabolic and hormonal agents produce changes in the heart and circulatory system faster than autonomic neural transmission.

Accepted Answer

A) True 
 B)False

Question 18

The function of P cells found in the sinoatrial node and Purkinje fibers is that they:

Accepted Answer

A)  are receptors for pain stimuli, such as the pain that occurs during infarction.
B)  prolong the refractory period before the next contraction.
C)  are assumed to be the site of impulse formation.
D)  initiate repolarization of the myocardium.E) A) and C)
F) A) and B)

Question 19

Match the description with the corresponding terms.
-Poiseuille's formula

Accepted Answer

A)  Relationship among blood flow, pressure, and resistance
B)  Increased heart rate from increased volume
C)  Relationship of wall tension intraventricular pressure, internal radius, and wall thickness
D)  Cycles of attachment, movement, and dissociation of thin filaments during the attachments of actin to myosin
E)  Length-tension relationship of cardiac muscleF) B) and E)
G) A) and B)

Question 20

Continuous increases in left ventricular filing pressures result in which disorder?

Accepted Answer

A)  Mitral regurgitation
B)  Mitral stenosis
C)  Pulmonary edema
D)  Jugular vein distentionE) B) and C)
F) A) and C)

Exam 29: Structure and Function of the Cardiovascular and Lymphatic Systems

Which of the following statements does not accurately describe the pericardium?

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Veins are less compliant than arteries.

Correct AnswerverifiedShow Answer

The cardiac electrical impulse normally begins spontaneously in the sinoatrial (SA) node because:

Correct AnswerverifiedShow Answer

Which chamber of the heart endures the highest pressures?

Correct AnswerverifiedShow Answer

Match the description with the corresponding terms. -Bainbridge reflex

Correct AnswerverifiedShow Answer

The arteries in the peripheral vasculature system are less able to stretch and recoil than the arteries of the great vessels.

Correct AnswerverifiedShow Answer

Continuous increases in left ventricular filing pressures result in which disorder?

Correct AnswerverifiedShow Answer

When the volume of blood in the ventricle at the end of diastole increases, the force of the myocardial contraction during the next systole will also increase.This is an example of which law or theory about the heart?

Correct AnswerverifiedShow Answer

Metabolic and hormonal agents produce changes in the heart and circulatory system faster than autonomic neural transmission.

Correct AnswerverifiedShow Answer

Match the description with the corresponding terms. -Poiseuille's formula

Correct AnswerverifiedShow Answer

The aortic valve obstructs coronary blood flow by pushing against the openings of the coronary arteries during systole.

Correct AnswerverifiedShow Answer

The function of P cells found in the sinoatrial node and Purkinje fibers is that they:

Correct AnswerverifiedShow Answer

Myogenic regulation of blood vessel diameter and subsequent blood flow through a vessel is an example of _____ of blood vessels.

Correct AnswerverifiedShow Answer

Match the intracardiac pressures with their description. -Produced because of descent of the tricuspid valve ring and by ejection of blood from both ventricles

Correct AnswerverifiedShow Answer

What is an expected change in the cardiovascular system that occurs with aging?

Correct AnswerverifiedShow Answer

Match the description with the corresponding terms. -Cross-bridge theory

Correct AnswerverifiedShow Answer

Which natriuretic peptide inhibits antidiuretic hormone by increasing urine sodium loss?

Correct AnswerverifiedShow Answer

As stated by the Frank-Starling law, there is a direct relationship between the _____ of the blood in the heart at the end of diastole and the _____ of contraction during the next systole.

Correct AnswerverifiedShow Answer

The coronary sinus empties into the:

Correct AnswerverifiedShow Answer

The _____ complex (wave) represents the sum of all ventricular muscle cell depolarizations.

Correct AnswerverifiedShow Answer

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As stated by the Frank-Starling law, there is a direct relationship between the _ of the blood in the heart at the end of diastole and the _ of contraction during the next systole.

Correct Answer
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