Question 1

Another name for the visceral pericardium is the ________.

Accepted Answer

A)  endocardium 
B)  epicardium 
C)  isocardium 
D)  myocardium 
E)  visocardium 
A)  endocardium 
B)  epicardium 
C)  isocardium 
D)  myocardium 
E)  visocardium

Question 2

Which of the following will depolarize immediately after the AV node depolarizes?

Accepted Answer

A)  The AV bundle 
B)  Purkinje fibers 
C)  Atrial myocardium 
D)  Bundle branches in the ventricular septum 
E)  The SA node 
A)  The AV bundle 
B)  Purkinje fibers 
C)  Atrial myocardium 
D)  Bundle branches in the ventricular septum 
E)  The SA node

Question 3

Which blood vessel carries blood away from the left ventricle?

Accepted Answer

A)  Aorta 
B)  Right atrium 
C)  Pulmonary trunk 
D)  Pulmonary arteries 
E)  Pulmonary veins 
A)  Aorta 
B)  Right atrium 
C)  Pulmonary trunk 
D)  Pulmonary arteries 
E)  Pulmonary veins

Question 4

Occlusion of which of the following would primarily damage the posterior wall of the heart?

Accepted Answer

A)  Circumflex artery 
B)  Pulmonary artery 
C)  Right marginal artery 
D)  Coronary sinus artery 
E)  Right coronary artery 
A)  Circumflex artery 
B)  Pulmonary artery 
C)  Right marginal artery 
D)  Coronary sinus artery 
E)  Right coronary artery

Question 5

A reduction in extracellular Ca2+ levels would lead to

Accepted Answer

A)  increased force of cardiac muscle contraction due to increased interactions between actin and myosin. 
B)  decreased force of cardiac muscle contraction due to a lack of release of Ca2+ from the sarcoplasmic reticulum. 
C)  heart block due to depolarization of the sarcolemma. 
D)  heart block due to hyperpolarization of the sarcolemma. 
A)  increased force of cardiac muscle contraction due to increased interactions between actin and myosin. 
B)  decreased force of cardiac muscle contraction due to a lack of release of Ca2+ from the sarcoplasmic reticulum. 
C)  heart block due to depolarization of the sarcolemma. 
D)  heart block due to hyperpolarization of the sarcolemma.

Question 6

The AV valve that is located on the same side of the heart as the origin of the aorta is the

Accepted Answer

A)  bicuspid or mitral valve. 
B)  tricuspid valve. 
C)  aortic semilunar valve. 
D)  pulmonary semilunar valve. 
E)  coronary sinus valve. 
A)  bicuspid or mitral valve. 
B)  tricuspid valve. 
C)  aortic semilunar valve. 
D)  pulmonary semilunar valve. 
E)  coronary sinus valve.

Question 7

Why is it important to use an antibiotic other than ampicillin in the treatment of bacterial pneumonia?

Accepted Answer

A)  Because antibiotics such as ampicillin destroy the cell walls of cardiac muscle cells. 
B)  Because antibiotics such as ampicillin cause the cells lining blood vessels to endocytose bacteria and deposit them in cardiac muscle tissue. 
C)  Because antibiotics such as ampicillin are not effective in the treatment of bacterial pneumonia. 
D)  Because antibiotics such as ampicillin destroy the cell walls of bacteria which cause a toxin to be released that will destroy cardiac muscle cells. 
A)  Because antibiotics such as ampicillin destroy the cell walls of cardiac muscle cells. 
B)  Because antibiotics such as ampicillin cause the cells lining blood vessels to endocytose bacteria and deposit them in cardiac muscle tissue. 
C)  Because antibiotics such as ampicillin are not effective in the treatment of bacterial pneumonia. 
D)  Because antibiotics such as ampicillin destroy the cell walls of bacteria which cause a toxin to be released that will destroy cardiac muscle cells.

Question 8

The long plateau in the action potential observed in cardiac muscle cells is probably related with ________ staying longer in the cytoplasm.

Accepted Answer

A)  Na+ 
B)  K+ 
C)  Ca2+ 
D)  Cl− 
E)  Na+, K+, and Ca2+ 
A)  Na+ 
B)  K+ 
C)  Ca2+ 
D)  Cl− 
E)  Na+, K+, and Ca2+

Question 9

Ezra is admitted to the cardiac unit with a diagnosis of endocarditis. When Ezra asks the nurse where the infection is located, the nurse replies that the infection is in

Accepted Answer

A)  the outer layer of the heart wall. 
B)  the inner lining of the heart. 
C)  a membranous sac that encloses the heart. 
D)  the muscular layer of the heart. 
E)  the lining of the mediastinum. 
A)  the outer layer of the heart wall. 
B)  the inner lining of the heart. 
C)  a membranous sac that encloses the heart. 
D)  the muscular layer of the heart. 
E)  the lining of the mediastinum.

Question 10

Contraction of the papillary muscles would

Accepted Answer

A)  eject blood from the ventricles. 
B)  prevent the AV valves from protruding into the atria. 
C)  close the semilunar valves. 
D)  cause the atria to eject their contents into the ventricles. 
E)  open the semilunar valves. 
A)  eject blood from the ventricles. 
B)  prevent the AV valves from protruding into the atria. 
C)  close the semilunar valves. 
D)  cause the atria to eject their contents into the ventricles. 
E)  open the semilunar valves.

Question 11

The great cardiac vein and middle cardiac vein empty into a venous cavity called the

Accepted Answer

A)  pulmonary vein. 
B)  inferior vena cava. 
C)  superior vena cava. 
D)  coronary sinus. 
E)  coronary artery. 
A)  pulmonary vein. 
B)  inferior vena cava. 
C)  superior vena cava. 
D)  coronary sinus. 
E)  coronary artery.

Question 12

Pressure in the right ventricle must exceed pressure in the ________ before the right ventricle can eject blood.

Accepted Answer

A)  superior vena cava 
B)  coronary sinus 
C)  pulmonary trunk 
D)  aorta 
E)  pulmonary veins 
A)  superior vena cava 
B)  coronary sinus 
C)  pulmonary trunk 
D)  aorta 
E)  pulmonary veins

Question 13

The chordae tendineae

Accepted Answer

A)  connect the atria to the ventricles. 
B)  are found in the interventricular septum. 
C)  are part of the conducting system of the heart. 
D)  connect the cusps of the AV valves to the papillary muscles. 
E)  are a part of the myocardium. 
A)  connect the atria to the ventricles. 
B)  are found in the interventricular septum. 
C)  are part of the conducting system of the heart. 
D)  connect the cusps of the AV valves to the papillary muscles. 
E)  are a part of the myocardium.

Question 14

Increased vagal stimulation would cause

Accepted Answer

A)  the heart rate to decrease. 
B)  the heart rate to increase. 
C)  force of contraction to increase. 
D)  stroke volume to increase. 
E)  no change in heart rate, stroke volume, or force of contraction. 
A)  the heart rate to decrease. 
B)  the heart rate to increase. 
C)  force of contraction to increase. 
D)  stroke volume to increase. 
E)  no change in heart rate, stroke volume, or force of contraction.

Question 15

During the cardiac cycle,

Accepted Answer

A)  the right atrium and the right ventricle contract simultaneously. 
B)  the two atria relax while the two ventricles contract. 
C)  the left atrium contracts before the right atrium. 
D)  all four chambers of the heart contract at the same time. 
E)  all four chambers of the heart are in systole at the same time. 
A)  the right atrium and the right ventricle contract simultaneously. 
B)  the two atria relax while the two ventricles contract. 
C)  the left atrium contracts before the right atrium. 
D)  all four chambers of the heart contract at the same time. 
E)  all four chambers of the heart are in systole at the same time.

Question 16

Variations in respiratory rate is a symptom of

Accepted Answer

A)  sinus arrhythmia. 
B)  ventricular tachycardia. 
C)  SA node block. 
D)  paroxysmal atrial tachycardia 
A)  sinus arrhythmia. 
B)  ventricular tachycardia. 
C)  SA node block. 
D)  paroxysmal atrial tachycardia

Question 17

The relationship between preload and stroke volume is known as

Accepted Answer

A)  extrinsic regulation. 
B)  cardiac reserve. 
C)  Starling Law of the heart. 
D)  minute volume. 
A)  extrinsic regulation. 
B)  cardiac reserve. 
C)  Starling Law of the heart. 
D)  minute volume.

Question 18

Which of the following would result from a reduced function of the Na+ channels in the SA node?

Accepted Answer

A)  Depolarization would be delayed. 
B)  The heart rate would decrease. 
C)  Repolarization would not occur. 
D)  The plateau phase would be shorter. 
E)  Depolarization would be delayed, and the heart rate would decrease. 
A)  Depolarization would be delayed. 
B)  The heart rate would decrease. 
C)  Repolarization would not occur. 
D)  The plateau phase would be shorter. 
E)  Depolarization would be delayed, and the heart rate would decrease.

Question 19

Which of the following heart chambers is correctly associated with the blood vessel that enters or leaves it?

Accepted Answer

A)  Right atrium - pulmonary veins 
B)  Left atrium - aorta 
C)  Right ventricle - pulmonary trunk 
D)  Left ventricle - superior vena cava and inferior vena cava 
E)  Right atrium - aorta 
A)  Right atrium - pulmonary veins 
B)  Left atrium - aorta 
C)  Right ventricle - pulmonary trunk 
D)  Left ventricle - superior vena cava and inferior vena cava 
E)  Right atrium - aorta

Question 20

Which of the following statements about coronary vessels is true?

Accepted Answer

A)  The left coronary artery is a branch of the left pulmonary vein. 
B)  The coronary sinus returns blood to the left atrium. 
C)  The coronary arteries arise from the pulmonary trunk. 
D)  The great cardiac vein collects blood from the left anterior surface of the heart. 
E)  The pulmonary arteries carry blood to the left atrium. 
A)  The left coronary artery is a branch of the left pulmonary vein. 
B)  The coronary sinus returns blood to the left atrium. 
C)  The coronary arteries arise from the pulmonary trunk. 
D)  The great cardiac vein collects blood from the left anterior surface of the heart. 
E)  The pulmonary arteries carry blood to the left atrium.

Exam 20: Cardiovascular System: the Heart

Another name for the visceral pericardium is the ________.

Which of the following will depolarize immediately after the AV node depolarizes?

Which blood vessel carries blood away from the left ventricle?

Occlusion of which of the following would primarily damage the posterior wall of the heart?

A reduction in extracellular Ca2+ levels would lead to

The AV valve that is located on the same side of the heart as the origin of the aorta is the

Why is it important to use an antibiotic other than ampicillin in the treatment of bacterial pneumonia?

The long plateau in the action potential observed in cardiac muscle cells is probably related with ________ staying longer in the cytoplasm.

Ezra is admitted to the cardiac unit with a diagnosis of endocarditis. When Ezra asks the nurse where the infection is located, the nurse replies that the infection is in

Contraction of the papillary muscles would

The great cardiac vein and middle cardiac vein empty into a venous cavity called the

Pressure in the right ventricle must exceed pressure in the ________ before the right ventricle can eject blood.

The chordae tendineae

Increased vagal stimulation would cause

During the cardiac cycle,

Variations in respiratory rate is a symptom of

The relationship between preload and stroke volume is known as

Which of the following would result from a reduced function of the Na+ channels in the SA node?

Which of the following heart chambers is correctly associated with the blood vessel that enters or leaves it?

Which of the following statements about coronary vessels is true?

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

A reduction in extracellular Ca²⁺ levels would lead to

Which of the following would result from a reduced function of the Na⁺ channels in the SA node?