Deck 11: The Circulatory System: The Heart

Question 1

The outer layer of the heart is the _______.

A) papillary
B) myocardium
C) parietal pericardium
D) epicardium

Answer 1

D

Question 2

A small muscular pouch called the _______ increases the surface area of each atrium.

A) auricle
B) septum
C) papillary muscle
D) pancreas

Answer 2

A

Question 3

The release of _______ by sympathetic nerves increases the force of contraction of cardiac muscle fibers.

A) epinephrine
B) norepinephrine
C) acetylcholine
D) plasma

Answer 3

B

Question 4

Two _______ arteries branch off the aorta as it leaves the heart.

A) coronary
B) cardiac
C) carotid
D) aortic

Question 5

In a trained athlete, the heart _______.

A) enlarges
B) can pump a greater quantity of blood per beat
C) remains in a state of tachycardia
D) answers a and b are correct

Question 6

The _______, or pacemaker of the heart, is a small mass of specialized muscle in the posterior wall of the right atrium.

A) coronary artery
B) atrioventricular (AV) node
C) sinoatrial (SA) node
D) atrioventricular bundle

Question 7

The first heart sound _______.

A) marks the beginning of ventricular diastole
B) is caused by the closure of the AV valves
C) is caused by the closure of the semilunar valves
D) answers a and b are correct

Question 8

The cardiac muscle becomes ________, or lacking in blood supply, when a coronary artery is blocked.

A) systolic
B) diastolic
C) anemic
D) ischemic

Question 9

The sequence of blood flow through the heart is _______.

A) right atrium right ventricle through pulmonary circulation left atrium
B) left atrium left ventricle right atrium through pulmonary circulation
C) right ventricle right atrium through pulmonary circulation left ventricle
D) through pulmonary circulation right atrium left atrium right ventricle

Question 10

The condition in which the heart rate is less than 60 beats per minute is called _______.

A) normal heart rate
B) tachycardia
C) coronary artery disease
D) bradycardia

Question 11

According to _____ law of the heart, the greater the amount of blood delivered to the heart by the veins, the more blood the heart pumps.

A) Newton's
B) Starling's
C) Heimlich's
D) Murphy's

Question 12

The valve between the left ventricle and the aorta is known as the _______ valve.

A) tricuspid
B) atrioventricular
C) bicuspid
D) aortic semilunar

Question 13

The _______ pump blood into the great arteries leaving the heart.

A) atria
B) aortas
C) ventricles
D) veins

Question 14

The _______ valve guards the passageway between each atrium and ventricle.

A) tricuspid
B) atrioventricular
C) bicuspid
D) semilunar

Question 15

Intercalated disks _______.

A) are specialized muscle fibers that conduct the impulse directly to the AV node
B) are tight junctions between cardiac muscle fibers that allow an impulse to pass rapidly from one fiber to the next
C) are the terminal fibers in the heart's conduction system
D) initiate the cardiac cycle

Question 16

The pericardium consists of two layers that are separated by a potential space called the _______.

A) pericardium space
B) thoracic cavity
C) epicardial cavity
D) pericardial cavity

Question 17

Cardiac output is the volume of blood _______.

A) pumped by one ventricle during one beat
B) that leaves the heart in 1 minute
C) pumped by the right atrium into the pulmonary artery in 1 minute
D) pumped by the left ventricle into the aorta in 1 minute

Question 18

Each cardiac cycle begins with _______.

A) contraction of the atria
B) diastole
C) contraction of the ventricles
D) closure of the semilunar valves

Question 19

The innermost layer of the heart, the _______, consists of a smooth endothelial lining resting upon connective tissue.

A) pericardium
B) myocardium
C) parietal pericardium
D) endocardium

Question 20

Sensory receptors in blood vessels and in the heart send messages to the _______ in the medulla of the brain.

A) cardiac centers
B) hypothalamus
C) ion channels
D) nerves

Question 21

A heart rate of more than 100 beats per minute is referred to as _______.

A) tachycardia
B) bradycardia
C) ischemia
D) myocardial infarction

Question 22

From the AV node, the impulse spreads into specialized muscle fibers that form the _______.

A) atrioventricular bundle
B) AV node
C) Purkinje fibers
D) intercalated disks

Question 23

Cardiac muscle fibers are joined at their ends by dense bands called _______.

A) Purkinje fibers
B) intercalated disks
C) AV fibers
D) cardiac disks

Question 24

The period of contraction in which blood is forced out of the heart is known as _______.

A) systole
B) diastole
C) cardiac contraction
D) coronary occlusion

Question 25

Cardiac output is the volume of blood _______.

A) pumped by one ventricle during one beat
B) that leaves the heart in 1 minute
C) pumped by the right atrium into the pulmonary artery in 1 minute
D) pumped by the left ventricle into the aorta in 1 minute

Question 26

In _______, the valve is thickened and slows the flow of blood from the left atrium into the left ventricle.

A) varicose veins
B) aortic aneurism
C) pulmonary vein stenosis
D) mitral stenosis

Question 27

The valve between the right ventricle and the pulmonary artery is the _______.

A) tricuspid valve
B) pulmonary semilunar valve
C) bicuspid valve
D) mitral valve

Question 28

The greatest bulk of the heart wall consists of _______, the cardiac muscle that contracts to pump the blood.

A) myocardium
B) endocardium
C) pericardium
D) septum

Question 29

The pathway taken by an electrical impulse through the heart is _______.

A) AV node SA node cardiac muscle of atria AV bundle right or left bundle branch muscle of ventricles
B) SA node cardiac muscle of atria AV node AV bundle right or left bundle branch muscle of ventricles
C) AV bundle AV node muscles of ventricles muscle of atria SA node
D) muscle of atria AV node muscles of ventricles muscle of atria SA node

Question 30

The right and left sides of the heart are completely separated by a wall, or _______.

A) pericardial cavity
B) thorax
C) septum
D) auricle

Question 31

According to Starling's law of the heart, _______.

A) an athlete's heart can pump faster than the heart of a nonathlete
B) stroke volume increases as cardiac output increases
C) the greater the amount of blood delivered to the heart by the veins, the more blood the heart pumps
D) cardiac output equals stroke volume times heart rate

Question 32

The left ventricle pumps oxygen-rich blood into the _______.

A) aorta
B) auricle
C) coronary arteries
D) pulmonary artery

Question 33

The events that occur during one complete heartbeat make up the _______.

A) coronary sequence
B) coronary cycle
C) cardiac cycle
D) electrocardiogram

Question 34

_______ increases heart rate.

A) Relaxation
B) Norepinephrine
C) Acetylcholine
D) Subnormal temperatures

Question 35

The period of relaxation in which the heart fills with blood is known as _______.

A) systole
B) diastole
C) cardiac contraction
D) coronary occlusion

Question 36

The second heart sound _______.

A) marks the beginning of ventricular diastole
B) is caused by the closure of the semilunar valves
C) is caused by the closure of the AV valves
D) answers A and B are correct

Question 37

_______ carry blood to the lungs, where gases are exchanged.

A) Pulmonary veins
B) Pulmonary capillaries
C) Carotid arteries
D) Pulmonary arteries

Question 38

_______ occurs when heart tissue is deprived of an adequate supply of oxygen and nutrients.

A) Mitral stenosis
B) Tachycardia
C) Myocardial infarction
D) Anemia

Question 39

Each heartbeat is initiated by the _______, or pacemaker.

A) Purkinje fibers
B) mitral valve
C) atrioventricular bundle
D) SA node

Question 40

Cardiac centers _______.

A) control autonomic nerves that signal the SA node
B) are located in the midbrain
C) are regulated by acetylcholine
D) answers A and B are correct

Question 41

Fill in the correct labels for the following figure using the word bank below.

a.Pulmonary semilunar valve
b.Aorta
c.Left atrium
d.Right ventricle
e.Left ventricle
f.Right atrium
D ___________

Question 42

Fill in the correct labels for the following figure using the word bank below.

a.Pulmonary semilunar valve
b.Aorta
c.Left atrium
d.Right ventricle
e.Left ventricle
f.Right atrium
F ___________

Question 43

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
E ___________

Question 44

Fill in the correct labels for the following figure using the word bank below.

a.Pulmonary semilunar valve
b.Aorta
c.Left atrium
d.Right ventricle
e.Left ventricle
f.Right atrium
E ___________

Question 45

Fill in the correct labels for the following figure using the word bank below.

a.Pulmonary semilunar valve
b.Aorta
c.Left atrium
d.Right ventricle
e.Left ventricle
f.Right atrium
C ___________

Question 46

Fill in the correct labels for the following figure using the word bank below.

a.Pulmonary semilunar valve
b.Aorta
c.Left atrium
d.Right ventricle
e.Left ventricle
f.Right atrium
A ___________

Question 47

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
F ___________

Question 48

Based on what you have learned about how the sinoatrial (SA) node works, describe how a mechanical pacemaker would function to assist the heart.

Question 49

Fill in the correct labels for the following figure using the word bank below.

a.Pulmonary semilunar valve
b.Aorta
c.Left atrium
d.Right ventricle
e.Left ventricle
f.Right atrium
B ___________

Question 50

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
H ___________

Question 51

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
I ___________

Question 52

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
D ___________

Question 53

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
A ___________

Question 54

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
G ___________

Question 55

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
C ___________

Question 56

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Apex
b.Right atrium
c.Arch of aorta
d.Inferior vena cava
e.Superior vena cava
f.Left pulmonary veins
g.Auricle of left atrium
h.Pulmonary arteries
i.Right ventricle
B ___________