Deck 13: Cardiovascular System

Question 1

The upper chambers are

A) discharging chambers
B) called ventricles
C) receiving chambers
D) both a and b above

Answer 1

C

Question 2

The right side of the heart

A) deals with oxygen-poor blood
B) deals with oxygen-rich blood
C) is the pump for systemic circulation
D) both b and c above

Answer 2

A

Question 3

In the pumping action of the heart

A) atrial systole follows ventricular systole
B) atrial systole precedes ventricular systole
C) atrial and ventricular systole occur at the same time
D) none of the above

Answer 3

B

Question 4

The "pacemaker" for the heart is usually the

A) sinoatrial node
B) Purkinje fibers
C) bundle of His
D) atrioventricular bundle

Question 5

The electrical connectors between heart muscle cells are called

A) myocardium
B) sinoatrial nodes
C) intercalated disks
D) Purkinje fibers

Question 6

The correct sequence for the conducting system is

A) sinoatrial node, AV bundle, Purkinje fibers, bundle of His
B) sinoatrial node, AV node, AV bundle, Purkinje fibers
C) sinoatrial node, bundle of His, AV bundle, Purkinje fibers
D) sinoatrial node, Purkinje fibers, AV bundle, AV node

Question 7

The heart is supplied with blood by

A) diffusion through the heart wall
B) the right and left cardiac arteries
C) arteries that branch directly from the pulmonary artery
D) arteries that branch directly from the aorta

Question 8

The heart valves are arranged with the

A) mitral and pulmonary semilunar valves on the right side of the heart
B) bicuspid and aortic semilunar valves on the right side of the heart
C) tricuspid and pulmonary semilunar valves on the right side of the heart
D) tricuspid and aortic semilunar valves on the left side of the heart

Question 9

In a normal ECG tracing,the T wave represents the

A) repolarization of the atria
B) depolarization of the atria
C) repolarization of the ventricles
D) depolarization of the ventricles

Question 10

The volume of blood ejected from the ventricles during each beat is called

A) cardiac output
B) stroke volume
C) systole
D) the cardiac cycle

Question 11

The heart is located

A) mostly to the left of the midline of the sternum
B) mostly to the right of the midline of the sternum
C) with the apex slightly below the clavicle
D) both a and c above

Question 12

The superior vena cava carries

A) oxygen-rich blood to the right atrium
B) oxygen-poor blood to the left atrium
C) oxygen-rich blood to the left atrium
D) oxygen-poor blood to the right atrium

Question 13

When the left ventricle contracts,it pushes blood through a valve to the

A) aorta
B) pulmonary artery
C) pulmonary vein
D) inferior vena cava

Question 14

The outermost layer of the heart is called the

A) epicardium
B) endocardium
C) visceral pericardium
D) both a and c above

Question 15

The first heart sound is the closing of the

A) pulmonary semilunar and aortic semilunar valves
B) tricuspid and mitral valves
C) mitral and bicuspid valves
D) tricuspid and pulmonary semilunar valves

Question 16

The pericardium

A) is a sac surrounding the heart
B) has an outer layer called the parietal pericardium
C) has an inner layer called the epicardium
D) all of the above

Question 17

The chambers of the heart include

A) two upper larger chambers called the atria
B) two lower smaller chambers called the ventricles
C) two lower larger chambers called the ventricles
D) both a and b above

Question 18

The innermost layer of the heart is called the

A) epicardium
B) endocardium
C) visceral pericardium
D) both a and c above

Question 19

In a normal ECG tracing,the QRS complex represents the

A) repolarization of the atria
B) depolarization of the atria
C) repolarization of the ventricles
D) depolarization of the ventricles

Question 20

The pulmonary vein returns oxygen-rich blood to the

A) right atrium
B) right ventricle
C) left atrium
D) left ventricle

Question 21

As the viscosity level of the blood

A) decreases, the blood pressure increases
B) increases, the blood pressure decreases
C) increases, the blood pressure increases
D) both a and b above

Question 22

The outermost layer of an artery or vein is called the

A) tunica intima
B) tunica media
C) tunica adventitia
D) endothelium

Question 23

Which tracing in a normal ECG is the repolarization of the atria?

A) The P wave
B) The QRS complex
C) The T wave
D) None of the above

Question 24

The blood vessels that carry blood toward the heart are the

A) veins
B) arteries
C) arterioles
D) capillaries

Question 25

The structure in the fetus that allows the blood to bypass the liver is the

A) ductus venosus
B) ductus arteriosus
C) foramen ovale
D) both b and c above

Question 26

The hepatic portal system

A) is the second capillary system
B) receives venous blood from the digestive system
C) helps maintain glucose homeostasis
D) all of the above

Question 27

The blood vessels that carry blood away from the heart are the

A) veins
B) venules
C) arteries
D) capillaries

Question 28

Central venous blood pressure

A) can be almost zero in the inferior vena cava
B) is usually 120 mm Hg during systole
C) is usually 80 mm Hg during diastole
D) both b and c above

Question 29

The structure in the fetus that allows the blood to bypass the lungs is the

A) ductus venosus
B) ductus arteriosus
C) foramen ovale
D) both b and c above

Question 30

Pulse

A) can only be felt in the neck or upper body
B) can be felt only in veins
C) can be felt only in arteries
D) requires that a vein pass over a bone

Question 31

The apical beat can best be heard

A) in the space between the third and fourth rib
B) on a line even with the midpoint of the left clavicle
C) in the space between the fifth and sixth rib
D) both b and c above

Question 32

One-way valves are found in which blood vessels?

A) Capillaries
B) Veins
C) Arteries
D) Arterioles

Question 33

Which of the following is not true of the atria?

A) Receive blood from arteries returning to the heart
B) Are called receiving chambers
C) Have thinner walls than ventricles
D) All of the above are true

Question 34

Which of the following is not true of ventricles?

A) Are called discharging chambers
B) Pump blood into the arteries
C) Have thinner walls than atria
D) All of the above are true

Question 35

The layer of the arteries and veins that contains smooth muscle tissue is the

A) tunica media
B) tunica intima
C) endothelium
D) both b and c above

Question 36

The first blood vessel of systemic circulation is the

A) pulmonary artery
B) pulmonary vein
C) aorta
D) superior vena cava

Question 37

The innermost layer of an artery or vein is called the

A) tunica intima
B) tunica media
C) endothelium
D) both a and c above

Question 38

Which of the following assists in moving venous blood back to the heart?

A) Contraction of skeletal muscles
B) One-way valves in the veins
C) The changing pressure in the chest caused by breathing
D) All of the above

Question 39

Blood pressure is highest in the aorta and lowest in the

A) arterioles
B) capillaries
C) arteries
D) superior and inferior vena cava

Question 40

The last blood vessel of pulmonary circulation is the

A) pulmonary artery
B) pulmonary vein
C) aorta
D) superior vena cava

Question 41

Cardiac output is

A) the volume of blood pumped from both ventricles per minute
B) the volume of blood pumped from one ventricle per minute
C) about 5 liters in the average adult
D) both b and c above

Question 42

About one third of the heart lies to the left of the midline of the sternum.

Question 43

Which of the following is not true of arteries?

A) They carry blood away from the capillaries.
B) They carry blood away from the heart.
C) They have thicker tunica media than do veins.
D) Their innermost layer is composed of endothelium.

Question 44

The blunt point of the heart is called the apex of the heart.

Question 45

One of the functions of the pericardium is to reduce the friction created by the beating heart.

Question 46

Chordae tendineae

A) are attached to the semilunar valves
B) are attached to the atrioventricular valves
C) are attached to the walls of the atria
D) both b and c

Question 47

Which of the following is not true of veins?

A) Blood drains into them from venules.
B) They carry blood back to the heart.
C) They have a thicker tunica media than do arteries.
D) Their innermost layer is called the tunica intima.

Question 48

Blood in the pulmonary artery

A) was ejected from the left ventricle
B) is rich in oxygen
C) has just passed through a semilunar valve
D) all of the above

Question 49

Another name for the visceral pericardium is the

A) epicardium
B) endocardium
C) myocardium
D) visceral pericardium is not known by another name

Question 50

The pericardium is composed of

A) muscle tissue
B) columnar epithelial tissue
C) serous membrane
D) fibrous connective tissue

Question 51

The septum,which divides the upper chambers of the heart into right and left sides,is called the interventricular septum.

Question 52

The volume of blood ejected from the ventricles during each beat is called

A) stroke volume
B) cardiac output
C) cardiac cycle
D) both a and b

Question 53

Another name for a heart attack is a(n)

A) embolism
B) angina pectoris
C) myocardial infarction
D) none of the above

Question 54

The tricuspid valve is located between the

A) left atrium and left ventricle
B) right atrium and right ventricle
C) right ventricle and the pulmonary artery
D) left ventricle and the aorta

Question 55

Blood that has just passed through the bicuspid valve is in the

A) aorta
B) right ventricle
C) left ventricle
D) pulmonary artery

Question 56

The parietal pericardium is also called the epicardium.

Question 57

A heart attack that causes injury to the myocardium will weaken the heart's ability to pump blood.

Question 58

Blood in the aorta

A) was ejected from the left ventricle
B) is rich in oxygen
C) has just passed through a semilunar valve
D) all of the above

Question 59

Another name for the parietal pericardium is the

A) epicardium
B) endocardium
C) myocardium
D) parietal pericardium is not known by another name

Question 60

Blood that has just passed through the bicuspid valve is in the

A) aorta
B) right ventricle
C) left ventricle
D) pulmonary artery

Question 61

In pulmonary circulation,arteries carry oxygen-poor blood.In systemic circulation,arteries carry oxygen-rich blood.

Question 62

The intercalated disks that link the heart cells assist in the efficient conduction of the heart contraction.

Question 63

During exercise,the greatest increase in blood flow is to the cardiac muscle.

Question 64

The Purkinje fibers and the bundle of His are involved in the contraction of the ventricles.

Question 65

The mitral valve,the bicuspid valve,and the left atrioventricular valve all refer to the same structure.

Question 66

A patient with a serious heart block may be treated with an artificial pacemaker.

Question 67

In the contracting heart,atrial systole is usually stronger than ventricular systole.

Question 68

The right ventricle provides the force to push the blood through systemic circulation.

Question 69

The tricuspid valve keeps blood from flowing back into the left atrium.

Question 70

Semilunar valves are between ventricles and arteries.

Question 71

The sinoatrial node is sometimes called the pacemaker of the heart.

Question 72

Valves are important in keeping the blood flow in the heart going in only one direction.

Question 73

In pulmonary circulation,veins carry oxygen-poor blood.In systemic circulation,veins carry oxygen-rich blood.

Question 74

An ECG is a graphic representation of the heart's electrical activity.

Question 75

The chordae tendineae are stringlike structures attached to the semilunar valves.

Question 76

The myocardium is working hardest when the heart is in diastole.

Question 77

The AV node initiates the contraction of the atria.

Question 78

The stroke volume of a normal resting adult is about 5 liters.

Question 79

Cardiac output is the volume of blood pumped by one ventricle in 1 minute.

Question 80

Both a myocardial infarction and angina pectoris are a result of an insufficient amount of oxygen getting to the heart muscle.