Chapter 20 The Heart E) pericarditis.
Answer: A
Multiple-Choice Questions
9) The interventricular sulci and coronary sulcus
1) Artery is to ________ as vein is to ________. A) contain fat.
A) efferent; afferent B) contain arteries.
B) afferent; efferent C) contain veins.
C) toward; away D) are grooves on the surface of the heart.
D) afferent; away E) All of the answers are correct.
E) efferent; away Answer: E
Answer: A
10) The structure that permits blood flow from the right atrium to the
2) The heart beats approximately ________ times each day. left atrium in the fetal circulation is the
A) 1,000 A) foramen ovale.
B) 10,000 B) interatrial septum.
C) 100,000 C) coronary sinus.
D) 1,000,000 D) fossa ovalis.
E) 10,000,000 E) ligamentum arteriosus.
Answer: C Answer: A
3) The heart pumps approximately ________ liters of blood each day. 11) Blood leaves the right ventricle by passing through the
A) 8,000 A) aortic valve.
B) 15,000 B) pulmonary valve.
C) 20,000 C) mitral valve.
D) 50,000 D) tricuspid valve.
E) 100,000 E) bicuspid valve.
Answer: A Answer: B
4) Excess fluid in the ________ causes cardiac tamponade. 12) Intercalated discs serve to transfer ________ from cell to cell.
A) pericardial cavity A) ionic currents
B) visceral pericardium B) action potentials
C) apex of heart C) the force of contraction
D) left ventricle D) electrical signals
E) both atria E) All of the answers are correct.
Answer: A Answer: E
5) Tetanic muscle contractions don't occur in a normal cardiac muscle 13) Cardiac muscle cells and skeletal muscle cells differ in a few
because ways. Which of the following is not one of them?
A) cardiac muscle tissue contracts on its own. A) Cardiac muscle cells are smaller in size.
B) neural stimulation is lacking. B) Cardiac muscle cells have a single, centered nucleus.
C) the refractory period lasts until the muscle relaxes. C) Cardiac muscle cells branch.
D) the refractory period ends before the muscle reaches peak tension. D) Skeletal muscle cells lack intercalated discs.
E) potassium channels outnumber sodium channels. E) Cardiac muscle cells lack transverse tubules.
Answer: C Answer: E
6) The adult heart is roughly the size of 14) The atrioventricular valves permit blood flow
A) the liver. A) in one direction only.
B) a man's clenched fist. B) in both directions.
C) the gallbladder. C) in many directions.
D) the hand of a 10-year-old. D) in opposite directions on the right and left.
E) the brain. E) from a ventricle to an atrium.
Answer: B Answer: A
7) Which of the following descriptions matches the term near the left 15) Blood returning to the heart from the systemic circuit first enters
fifth intercostal space? the
A) pericardial cavity A) right atrium.
B) visceral pericardium B) right ventricle.
C) apex of heart C) left atrium.
D) aorta D) left ventricle.
E) right atrium E) conus arteriosus.
Answer: C Answer: A
8) The term used to describe fluid collecting in the pericardial cavity 16) Blood returning to the heart from the pulmonary circuit first
that restricts the movement of the heart is known as enters the
A) cardiac tamponade. A) right atrium.
B) mitral valve prolapse. B) right ventricle.
C) pleural effusion. C) left atrium.
D) cardiomyopathy. D) left ventricle.
1
, E) conus arteriosus. 25) The left ventricle pumps blood to the
Answer: C A) lungs.
B) right ventricle.
17) The earlike extension of the atrium is the C) right atrium.
A) ventricle. D) aorta.
B) coronary sinus. E) pulmonary circuit.
C) coronary sulcus. Answer: D
D) auricle.
E) atricle. 26) The right atrium receives blood from the
Answer: D A) coronary sinus.
B) superior vena cava.
18) The coronary sulcus is a groove that C) inferior vena cava.
A) marks the border between the atria and ventricles. D) systemic circuit.
B) marks the boundary line between the right and left ventricles. E) All of the answers are correct.
C) marks the boundary line between the right and left atria. Answer: D
D) separates the atrioventricular valves from the atria.
E) separates the coronary arteries from the coronary veins. 27) In order to perform a CABG, a cardiac surgeon must
Answer: A A) open the pericardial sac.
B) open the myocardium to see the AV valves.
19) In the middle of the thoracic cavity is a region occupied by the C) visualize the pulmonary valve.
heart, great vessels, thymus, esophagus, and trachea called the D) visualize the carotid arteries.
A) pleural space. E) All of the answers are correct.
B) pericardial space. Answer: A
C) mediastinum.
D) cardiac notch. 28) When a blood clot forms on a ruptured plaque in a coronary
E) ventral cavity. artery, the condition is referred to as a(n)
Answer: C A) coronary spasm.
B) myocardial infarction.
20) The cusps (leaflets) of atrioventricular valves attach directly to C) coronary thrombosis.
A) papillary muscles. D) angina pectoris.
B) trabeculae carneae. E) pulmonary embolism.
C) chordae tendineae. Answer: C
D) interatrial septa.
E) coronary sulci. 29) When the left ventricle contracts, the distance from the apex to
Answer: C the base
A) increases.
21) Contractions of the papillary muscles B) decreases.
A) close the atrioventricular valves. C) remains unchanged.
B) close the semilunar valves. Answer: B
C) eject blood from the ventricles. Learning Outcome: 20-1
D) prevent the atrioventricular valves from reversing into the atria. Bloom's Taxonomy: Comprehension
E) eject blood from the atria into the ventricles.
Answer: D 30) When the left ventricle contracts, the diameter of the ventricular
chamber
22) The visceral pericardium is the same as the A) increases.
A) mediastinum. B) decreases.
B) parietal pericardium. C) remains the same.
C) epicardium. Answer: B
D) myocardium.
E) endocardium. 31) Cardiac cells damaged by infarction will show which of the
Answer: C following?
A) switch to anaerobic metabolism
23) Most of the middle layer in the heart wall is composed of B) release of enzymes into the circulation
A) cardiac muscle cells. C) release of troponin T and I into the circulation
B) chondrocytes. D) release of CK-MB into the circulation
C) epitheliocytes. E) All of the answers are correct.
D) fibrocytes. Answer: E
E) smooth muscle cells.
Answer: A 32) Blood flowing into the heart from the venae cavae flows next
through the ________ valve.
24) The right ventricle pumps blood to the A) mitral
A) right and left lungs. B) bicuspid
B) left ventricle. C) tricuspid
C) left atrium. D) pulmonary semilunar
D) aorta. E) aortic semilunar
E) right atrium. Answer: C
Answer: A
33) As blood leaves the right ventricle it passes through the
2
Answer: A
Multiple-Choice Questions
9) The interventricular sulci and coronary sulcus
1) Artery is to ________ as vein is to ________. A) contain fat.
A) efferent; afferent B) contain arteries.
B) afferent; efferent C) contain veins.
C) toward; away D) are grooves on the surface of the heart.
D) afferent; away E) All of the answers are correct.
E) efferent; away Answer: E
Answer: A
10) The structure that permits blood flow from the right atrium to the
2) The heart beats approximately ________ times each day. left atrium in the fetal circulation is the
A) 1,000 A) foramen ovale.
B) 10,000 B) interatrial septum.
C) 100,000 C) coronary sinus.
D) 1,000,000 D) fossa ovalis.
E) 10,000,000 E) ligamentum arteriosus.
Answer: C Answer: A
3) The heart pumps approximately ________ liters of blood each day. 11) Blood leaves the right ventricle by passing through the
A) 8,000 A) aortic valve.
B) 15,000 B) pulmonary valve.
C) 20,000 C) mitral valve.
D) 50,000 D) tricuspid valve.
E) 100,000 E) bicuspid valve.
Answer: A Answer: B
4) Excess fluid in the ________ causes cardiac tamponade. 12) Intercalated discs serve to transfer ________ from cell to cell.
A) pericardial cavity A) ionic currents
B) visceral pericardium B) action potentials
C) apex of heart C) the force of contraction
D) left ventricle D) electrical signals
E) both atria E) All of the answers are correct.
Answer: A Answer: E
5) Tetanic muscle contractions don't occur in a normal cardiac muscle 13) Cardiac muscle cells and skeletal muscle cells differ in a few
because ways. Which of the following is not one of them?
A) cardiac muscle tissue contracts on its own. A) Cardiac muscle cells are smaller in size.
B) neural stimulation is lacking. B) Cardiac muscle cells have a single, centered nucleus.
C) the refractory period lasts until the muscle relaxes. C) Cardiac muscle cells branch.
D) the refractory period ends before the muscle reaches peak tension. D) Skeletal muscle cells lack intercalated discs.
E) potassium channels outnumber sodium channels. E) Cardiac muscle cells lack transverse tubules.
Answer: C Answer: E
6) The adult heart is roughly the size of 14) The atrioventricular valves permit blood flow
A) the liver. A) in one direction only.
B) a man's clenched fist. B) in both directions.
C) the gallbladder. C) in many directions.
D) the hand of a 10-year-old. D) in opposite directions on the right and left.
E) the brain. E) from a ventricle to an atrium.
Answer: B Answer: A
7) Which of the following descriptions matches the term near the left 15) Blood returning to the heart from the systemic circuit first enters
fifth intercostal space? the
A) pericardial cavity A) right atrium.
B) visceral pericardium B) right ventricle.
C) apex of heart C) left atrium.
D) aorta D) left ventricle.
E) right atrium E) conus arteriosus.
Answer: C Answer: A
8) The term used to describe fluid collecting in the pericardial cavity 16) Blood returning to the heart from the pulmonary circuit first
that restricts the movement of the heart is known as enters the
A) cardiac tamponade. A) right atrium.
B) mitral valve prolapse. B) right ventricle.
C) pleural effusion. C) left atrium.
D) cardiomyopathy. D) left ventricle.
1
, E) conus arteriosus. 25) The left ventricle pumps blood to the
Answer: C A) lungs.
B) right ventricle.
17) The earlike extension of the atrium is the C) right atrium.
A) ventricle. D) aorta.
B) coronary sinus. E) pulmonary circuit.
C) coronary sulcus. Answer: D
D) auricle.
E) atricle. 26) The right atrium receives blood from the
Answer: D A) coronary sinus.
B) superior vena cava.
18) The coronary sulcus is a groove that C) inferior vena cava.
A) marks the border between the atria and ventricles. D) systemic circuit.
B) marks the boundary line between the right and left ventricles. E) All of the answers are correct.
C) marks the boundary line between the right and left atria. Answer: D
D) separates the atrioventricular valves from the atria.
E) separates the coronary arteries from the coronary veins. 27) In order to perform a CABG, a cardiac surgeon must
Answer: A A) open the pericardial sac.
B) open the myocardium to see the AV valves.
19) In the middle of the thoracic cavity is a region occupied by the C) visualize the pulmonary valve.
heart, great vessels, thymus, esophagus, and trachea called the D) visualize the carotid arteries.
A) pleural space. E) All of the answers are correct.
B) pericardial space. Answer: A
C) mediastinum.
D) cardiac notch. 28) When a blood clot forms on a ruptured plaque in a coronary
E) ventral cavity. artery, the condition is referred to as a(n)
Answer: C A) coronary spasm.
B) myocardial infarction.
20) The cusps (leaflets) of atrioventricular valves attach directly to C) coronary thrombosis.
A) papillary muscles. D) angina pectoris.
B) trabeculae carneae. E) pulmonary embolism.
C) chordae tendineae. Answer: C
D) interatrial septa.
E) coronary sulci. 29) When the left ventricle contracts, the distance from the apex to
Answer: C the base
A) increases.
21) Contractions of the papillary muscles B) decreases.
A) close the atrioventricular valves. C) remains unchanged.
B) close the semilunar valves. Answer: B
C) eject blood from the ventricles. Learning Outcome: 20-1
D) prevent the atrioventricular valves from reversing into the atria. Bloom's Taxonomy: Comprehension
E) eject blood from the atria into the ventricles.
Answer: D 30) When the left ventricle contracts, the diameter of the ventricular
chamber
22) The visceral pericardium is the same as the A) increases.
A) mediastinum. B) decreases.
B) parietal pericardium. C) remains the same.
C) epicardium. Answer: B
D) myocardium.
E) endocardium. 31) Cardiac cells damaged by infarction will show which of the
Answer: C following?
A) switch to anaerobic metabolism
23) Most of the middle layer in the heart wall is composed of B) release of enzymes into the circulation
A) cardiac muscle cells. C) release of troponin T and I into the circulation
B) chondrocytes. D) release of CK-MB into the circulation
C) epitheliocytes. E) All of the answers are correct.
D) fibrocytes. Answer: E
E) smooth muscle cells.
Answer: A 32) Blood flowing into the heart from the venae cavae flows next
through the ________ valve.
24) The right ventricle pumps blood to the A) mitral
A) right and left lungs. B) bicuspid
B) left ventricle. C) tricuspid
C) left atrium. D) pulmonary semilunar
D) aorta. E) aortic semilunar
E) right atrium. Answer: C
Answer: A
33) As blood leaves the right ventricle it passes through the
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