Question 1

The beginning of the cardiac cycle is when the

Accepted Answer

A)  atria fill with blood.
B)  ventricles fill with blood.
C)  atria contract.
D)  two semilunar valves close.
E)  ventricles contract.F) A) and D)
G) B) and D)

Question 2

Which of the cardiovascular system's circuits has deoxygenated blood in its arteries?

Accepted Answer

A)  Pulmonary circuit
B)  Systemic circuit
C)   Coronary circuitD) A) and C)
E) All of the above

Question 3

One reason that necessitates the relatively early development of the heart is that the embryo has become too large to receive adequate nutrient supply by diffusion alone.

Accepted Answer

A) True 
 B)False

Question 4

The internal wall surface of each ventricle displays large,smooth,irregular muscular ridges called

Accepted Answer

A)  conus arteriosus.
B)  atrioventricular opening.
C)  trabeculae carneae.
D)  chordae tendineae
E)  pectinate musclesF) B) and E)
G) A) and B)

Question 5

During ventricular contraction the semilunar valves close in order to permit the blood to enter the large arterial trunks that carry blood away from the heart.

Accepted Answer

A) True 
 B)False

Question 6

The gap junctions of intercalated discs provide a low-resistance pathway across the membranes of adjoining cardiac muscle fibers.

Accepted Answer

A) True 
 B)False

Question 7

The numerous ________________ within the intercalated discs prevent cardiac muscle fibers from pulling apart.

Accepted Answer

The answer of The numerous ________________ within the intercalated discs...

Question 8

Of the four "normal" heart sounds,the initial "lubb" sound is heard when the

Accepted Answer

A)  AV valves close.
B)  semilunar valves close.
C)  AV valves open.
D)  semilunar valves open.
E)  foramen ovale closes.F) A) and C)
G) B) and D)

Question 9

The embryonic heart actually begins working before its development is complete.

Accepted Answer

A) True 
 B)False

Question 10

It is the _____________ that permits the compression necessary to pump large volumes of blood out of the ventricles.

Accepted Answer

A)  negative pressure inside the ventricles
B)  absence of oxygenated blood in the atria
C)  arrangement of cardiac muscle in the heart wall
D)  presence of skeletal muscle tissue in the heart skeleton
E)  presence of papillary muscles in the ventriclesF) A) and B)
G) C) and D)

Question 11

The arteries and veins that leave and enter the heart are called the great vessels because

Accepted Answer

A)  they are associated with the heart directly.
B)  they carry the most highly oxygenated blood.
C)  they are longer than any other blood vessels in the body.
D)  they have relatively large diameters.
E)  Both types have the highest blood pressure in the body.F) B) and E)
G) D) and E)

Question 12

Which are functions performed by the fibrous skeleton of the heart? 
A: Separates the atria and ventricles
B: Anchors the heart valves
C: Provides electrical insulation between the atria and ventricles
D: Provides the framework for the attachment of the myocardium
E: None of these are true functions of the fibrous skeleton of the heart.

Accepted Answer

A)  a,d
B)  b,d
C)  a,c,d
D)  a,b,c,d
E)  eF) A) and D)
G) A) and C)

Question 13

The left ventricle has a wall that is typically three times thicker than the right ventricular wall.

Accepted Answer

A) True 
 B)False

Question 14

The ______________ circuit consists of the chambers on the right side of the heart as well as the pulmonary arteries and veins.

Accepted Answer

The answer of The ______________ circuit consists of the chambers...

Question 15

Sympathetic innervation of the heart 
A: increases the heart rate.
B: decreases the heart rate.
C: increases the force of contractions.
D: decreases the force of contractions.
E: has no effect on contraction force.

Accepted Answer

A)  a,c
B)  b,d
C)  a,d
D)  b,e
E)  a,eF) A) and B)
G) B) and D)

Question 16

The relaxation phase of a heart chamber is termed ________________.

Accepted Answer

The answer of The relaxation phase of a heart chamber...

Question 17

One example of cardiac arrhythmia is _________,in which a rapid,repetitious movement of the ventricular muscle replaces normal contractions.

Accepted Answer

A)  atrial fibrillation
B)  atrial flutter
C)  ventricular fibrillation
D)  premature ventricular contraction
E)  None of the choices is correct.F) B) and D)
G) A) and C)

Question 18

Which analogy fits the human heart?

Accepted Answer

A)  It is like a single pump.
B)  It is like a double pump,each working side by side with the other.
C)  It is like four pumps working in alternating cycles.
D)  It is like a double pump,each working at its own rate determined by the needs of the body served.
E)  It is like a single pump whose various chambers all work together at once.F) C) and E)
G) A) and B)

Question 19

The epicardium is another name for the

Accepted Answer

A)  visceral layer of the serous pericardium.
B)  parietal layer of the serous pericardium.
C)  pericardium.
D)  myocardium.
E)  myometrium.F) B) and E)
G) A) and B)

Question 20

The _______________ cardiac vein travels alongside the right marginal artery.

Accepted Answer

The answer of The _______________ cardiac vein travels alongside the...

Exam 22: Heart

Sympathetic innervation of the heart A: increases the heart rate. B: decreases the heart rate. C: increases the force of contractions. D: decreases the force of contractions. E: has no effect on contraction force.

Correct Answer
verified

One example of cardiac arrhythmia is _________,in which a rapid,repetitious movement of the ventricular muscle replaces normal contractions.

Correct Answer
verified

Correct Answer
verified

The beginning of the cardiac cycle is when the

Correct Answer
verified

The arteries and veins that leave and enter the heart are called the great vessels because

Correct Answer
verified

During ventricular contraction the semilunar valves close in order to permit the blood to enter the large arterial trunks that carry blood away from the heart.

Correct Answer
verified

The _______________ cardiac vein travels alongside the right marginal artery.

Correct Answer
verified

Of the four "normal" heart sounds,the initial "lubb" sound is heard when the

Correct Answer
verified

The embryonic heart actually begins working before its development is complete.

Correct Answer
verified

The internal wall surface of each ventricle displays large,smooth,irregular muscular ridges called

Correct Answer
verified

The numerous ________________ within the intercalated discs prevent cardiac muscle fibers from pulling apart.

Correct Answer
verified

Which of the cardiovascular system's circuits has deoxygenated blood in its arteries?

Correct Answer
verified

One reason that necessitates the relatively early development of the heart is that the embryo has become too large to receive adequate nutrient supply by diffusion alone.

Correct Answer
verified

The relaxation phase of a heart chamber is termed ________________.

Correct Answer
verified

The gap junctions of intercalated discs provide a low-resistance pathway across the membranes of adjoining cardiac muscle fibers.

Correct Answer
verified

The left ventricle has a wall that is typically three times thicker than the right ventricular wall.

Correct Answer
verified

It is the _____________ that permits the compression necessary to pump large volumes of blood out of the ventricles.

Correct Answer
verified

Which analogy fits the human heart?

Correct Answer
verified

The epicardium is another name for the

Correct Answer
verified

The ______________ circuit consists of the chambers on the right side of the heart as well as the pulmonary arteries and veins.

Correct Answer
verified

Exam 22: Heart

Sympathetic innervation of the heart A: increases the heart rate. B: decreases the heart rate. C: increases the force of contractions. D: decreases the force of contractions. E: has no effect on contraction force.

Correct AnswerverifiedShow Answer

One example of cardiac arrhythmia is _________,in which a rapid,repetitious movement of the ventricular muscle replaces normal contractions.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The beginning of the cardiac cycle is when the

Correct AnswerverifiedShow Answer

The arteries and veins that leave and enter the heart are called the great vessels because

Correct AnswerverifiedShow Answer

During ventricular contraction the semilunar valves close in order to permit the blood to enter the large arterial trunks that carry blood away from the heart.

Correct AnswerverifiedShow Answer

The _______________ cardiac vein travels alongside the right marginal artery.

Correct AnswerverifiedShow Answer

Of the four "normal" heart sounds,the initial "lubb" sound is heard when the

Correct AnswerverifiedShow Answer

The embryonic heart actually begins working before its development is complete.

Correct AnswerverifiedShow Answer

The internal wall surface of each ventricle displays large,smooth,irregular muscular ridges called

Correct AnswerverifiedShow Answer

The numerous ________________ within the intercalated discs prevent cardiac muscle fibers from pulling apart.

Correct AnswerverifiedShow Answer

Which of the cardiovascular system's circuits has deoxygenated blood in its arteries?

Correct AnswerverifiedShow Answer

One reason that necessitates the relatively early development of the heart is that the embryo has become too large to receive adequate nutrient supply by diffusion alone.

Correct AnswerverifiedShow Answer

The relaxation phase of a heart chamber is termed ________________.

Correct AnswerverifiedShow Answer

The gap junctions of intercalated discs provide a low-resistance pathway across the membranes of adjoining cardiac muscle fibers.

Correct AnswerverifiedShow Answer

The left ventricle has a wall that is typically three times thicker than the right ventricular wall.

Correct AnswerverifiedShow Answer

It is the _____________ that permits the compression necessary to pump large volumes of blood out of the ventricles.

Correct AnswerverifiedShow Answer

Which analogy fits the human heart?

Correct AnswerverifiedShow Answer

The epicardium is another name for the

Correct AnswerverifiedShow Answer

The ______________ circuit consists of the chambers on the right side of the heart as well as the pulmonary arteries and veins.

Correct AnswerverifiedShow Answer

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