Question 1

Which of the following is true regarding the mediastinum?

Accepted Answer

A)  It is located within the pleural cavity. 
B)  The lungs are located within the mediastinum. 
C)  The mediastinum is located to the right of the midline of the sternum. 
D)  The mediastinum is a space between the lungs. 
A)  It is located within the pleural cavity. 
B)  The lungs are located within the mediastinum. 
C)  The mediastinum is located to the right of the midline of the sternum. 
D)  The mediastinum is a space between the lungs.

Question 2

Which of the following is least true of the aortic valve?

Accepted Answer

A)  It is also called the left semilunar valve. 
B)  It "sees" oxygenated blood. 
C)  Blood flows from the ventricle through this valve into the pulmonary artery. 
D)  An incompetent aortic valve allows blood to leak from the aorta back into the left ventricle. 
A)  It is also called the left semilunar valve. 
B)  It "sees" oxygenated blood. 
C)  Blood flows from the ventricle through this valve into the pulmonary artery. 
D)  An incompetent aortic valve allows blood to leak from the aorta back into the left ventricle.

Question 3

Which of the following is part of the blood flow through the heart?

Accepted Answer

A)  Left atrium 
B)  Left anterior descending artery 
C)  Circumflex artery 
D)  Right coronary artery 
A)  Left atrium 
B)  Left anterior descending artery 
C)  Circumflex artery 
D)  Right coronary artery

Question 4

With which of the following is "lubb-dupp" associated?

Accepted Answer

A)  Myocardial contraction 
B)  Ventricular depolarization 
C)  Closing of heart valves 
D)  Diffusion of O2 from the lungs to the blood in the pulmonary capillaries 
A)  Myocardial contraction 
B)  Ventricular depolarization 
C)  Closing of heart valves 
D)  Diffusion of O2 from the lungs to the blood in the pulmonary capillaries

Question 5

Which of the following is least related to the mitral valve?

Accepted Answer

A)  Left heart 
B)  Bicuspid 
C)  Semilunar 
D)  Chordae tendineae 
A)  Left heart 
B)  Bicuspid 
C)  Semilunar 
D)  Chordae tendineae

Question 6

Which of the following is an electrical event?

Accepted Answer

A)  "Lubb-dupp" 
B)  Actin and myosin interaction 
C)  Murmur 
D)  Depolarization 
A)  "Lubb-dupp" 
B)  Actin and myosin interaction 
C)  Murmur 
D)  Depolarization

Question 7

During ventricular filling,the

Accepted Answer

A)  semilunar valves are open. 
B)  AV valves are closed. 
C)  QRS complex is "happening." 
D)  ventricles are relaxed. 
A)  semilunar valves are open. 
B)  AV valves are closed. 
C)  QRS complex is "happening." 
D)  ventricles are relaxed.

Question 8

Which of the following is a correct valvular position when the atria are contracting?

Accepted Answer

A)  The tricuspid valve is closed 
B)  The pulmonic valve is open 
C)  Both semilunar valves are open 
D)  Both AV valves are open 
A)  The tricuspid valve is closed 
B)  The pulmonic valve is open 
C)  Both semilunar valves are open 
D)  Both AV valves are open

Question 9

Which of the following is most true of S₁?

Accepted Answer

A)  Also known as dupp 
B)  Indicative of gallop rhythm 
C)  Occurs during the beginning of ventricular systole with the closure of the tricuspid and mitral valves 
D)  It is the heart sound caused by the rapid movement of the action potential along the His-Purkinje system. 
A)  Also known as dupp 
B)  Indicative of gallop rhythm 
C)  Occurs during the beginning of ventricular systole with the closure of the tricuspid and mitral valves 
D)  It is the heart sound caused by the rapid movement of the action potential along the His-Purkinje system.

Question 10

Which of the following defines a nodal rhythm?

Accepted Answer

A)  Sinus rhythm is normal. 
B)  The electrical signal arises within the SA node. 
C)  The electrical signal arises within the AV node. 
D)  The ventricular myocardium is fibrillating. 
A)  Sinus rhythm is normal. 
B)  The electrical signal arises within the SA node. 
C)  The electrical signal arises within the AV node. 
D)  The ventricular myocardium is fibrillating.

Question 11

A vessel(s)that carry(ies)blood from the pulmonary capillaries to the left atrium is (are)the

Accepted Answer

A)  aorta. 
B)  pulmonary artery. 
C)  pulmonary veins. 
D)  vena cava. 
A)  aorta. 
B)  pulmonary artery. 
C)  pulmonary veins. 
D)  vena cava.

Question 12

Which of the following supplies oxygenated blood to the heart muscle?

Accepted Answer

A)  Coronary arteries 
B)  Pulmonary artery 
C)  Pulmonary veins 
D)  Cardiac veins 
A)  Coronary arteries 
B)  Pulmonary artery 
C)  Pulmonary veins 
D)  Cardiac veins

Question 13

The purpose of this structure is to delay the spread of the signal from the atrium to the ventricles.

Accepted Answer

A)  SA node 
B)  Purkinje fibers 
C)  Bundle of His 
D)  AV node 
A)  SA node 
B)  Purkinje fibers 
C)  Bundle of His 
D)  AV node

Question 14

Which of the following best describes the heart as a double pump?

Accepted Answer

A)  Atria and ventricles 
B)  Right and left 
C)  AV and semilunar 
D)  Interatrial septum, interventricular septum 
A)  Atria and ventricles 
B)  Right and left 
C)  AV and semilunar 
D)  Interatrial septum, interventricular septum

Question 15

Which of the following best describes the function of the pulmonary artery?

Accepted Answer

A)  It carries unoxygenated blood to the right atrium. 
B)  It supplies lung tissue with oxygenated blood. 
C)  It carries oxygenated blood from the lungs to the left atrium. 
D)  It carries unoxygenated blood to the pulmonary capillaries, where gas exchange occurs. 
A)  It carries unoxygenated blood to the right atrium. 
B)  It supplies lung tissue with oxygenated blood. 
C)  It carries oxygenated blood from the lungs to the left atrium. 
D)  It carries unoxygenated blood to the pulmonary capillaries, where gas exchange occurs.

Question 16

Which of the following is true regarding cardiac blood flow?

Accepted Answer

A)  In the normal heart coronary blood flow increases with exercise. 
B)  In a diseased heart coronary blood flow may be maximal at rest. 
C)  In a diseased heart exertion may cause ischemia and angina. 
D)  All of the above are true. 
A)  In the normal heart coronary blood flow increases with exercise. 
B)  In a diseased heart coronary blood flow may be maximal at rest. 
C)  In a diseased heart exertion may cause ischemia and angina. 
D)  All of the above are true.

Question 17

The bicuspid and mitral valves

Accepted Answer

A)  are semilunar valves. 
B)  "see" only unoxygenated blood. 
C)  "see" only oxygenated blood 
D)  are exit valves. 
A)  are semilunar valves. 
B)  "see" only unoxygenated blood. 
C)  "see" only oxygenated blood 
D)  are exit valves.

Question 18

Which of the following is least true of S₂?

Accepted Answer

A)  Also known as dupp 
B)  Heart sound 
C)  Indicative of a gallop rhythm 
D)  Heard at the beginning of ventricular relaxation (diastole) 
A)  Also known as dupp 
B)  Heart sound 
C)  Indicative of a gallop rhythm 
D)  Heard at the beginning of ventricular relaxation (diastole)

Question 19

What structure is not perfused as blood flows from the venae cavae to the pulmonary veins?

Accepted Answer

A)  Right ventricle 
B)  Left anterior descending artery 
C)  Pulmonary artery 
D)  Pulmonary capillaries 
A)  Right ventricle 
B)  Left anterior descending artery 
C)  Pulmonary artery 
D)  Pulmonary capillaries

Question 20

Where does the cardiac action potential (cardiac impulse)normally originate?

Accepted Answer

A)  AV node 
B)  Purkinje fibers 
C)  Ectopic focus 
D)  SA node 
A)  AV node 
B)  Purkinje fibers 
C)  Ectopic focus 
D)  SA node

Exam 16: Anatomy of the Heart

Which of the following is true regarding the mediastinum?

Which of the following is least true of the aortic valve?

Which of the following is part of the blood flow through the heart?

With which of the following is "lubb-dupp" associated?

Which of the following is least related to the mitral valve?

Which of the following is an electrical event?

During ventricular filling,the

Which of the following is a correct valvular position when the atria are contracting?

Which of the following is most true of S₁?

Which of the following defines a nodal rhythm?

A vessel(s)that carry(ies)blood from the pulmonary capillaries to the left atrium is (are)the

Which of the following supplies oxygenated blood to the heart muscle?

The purpose of this structure is to delay the spread of the signal from the atrium to the ventricles.

Which of the following best describes the heart as a double pump?

Which of the following best describes the function of the pulmonary artery?

Which of the following is true regarding cardiac blood flow?

The bicuspid and mitral valves

Which of the following is least true of S₂?

What structure is not perfused as blood flows from the venae cavae to the pulmonary veins?

Where does the cardiac action potential (cardiac impulse)normally originate?

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

Function 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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