Question 1

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 2

Which action causes the closure of the right atrioventricular valve?

Accepted Answer

A)  Contraction of the right atrium
B)  Contraction of the left atrium
C)  Contraction of the right ventricle
D)  Contraction of the left ventricle
E)  None of these answers is correct.F) B) and D)
G) A) and D)

Question 3

The left atrium and left ventricle are part of which circuit of the cardiovascular system?

Accepted Answer

A)  Pulmonary circuit
B)  Cardio circuit
C)  Coronary circuit
D)  Systemic circuit
E)  Schwann circuitF) D) and E)
G) A) and B)

Question 4

The trabeculae carneae in the left ventricle are ____________ in the right ventricle.

Accepted Answer

A)  less prominent than
B)  not present as
C)  more prominent than
D)  equally as prominent as
E)  None of these answers is correct.F) None of the above
G) All of the above

Question 5

The inferior chambers of the heart are the

Accepted Answer

A)  atria.
B)  auricles.
C)  ventricles.
D)  sulci.
E)  gyri.F) D) and E)
G) A) and B)

Question 6

About seventy percent of the ventricle filling is achieved passively without the contraction of the atria.

Accepted Answer

A) True 
 B)False

Question 7

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  False

Question 8

The anterior part of each atrium is a flaplike extension called a(n)_______________.

Accepted Answer

The answer of The anterior part of each atrium is...

Question 9

Which structure marks the end of the left ventricle and the entrance to the aorta?

Accepted Answer

A)  Pulmonary semilunar valve
B)  Left atrioventricular valve
C)  Right atrioventricular valve
D)  Aortic semilunar valve
E)  Foramen ovaleF) B) and C)
G) None of the above

Question 10

-In this figure showing an anterior view of the heart,the left atrium is noted by number _____.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) C) and D)
G) All of the above D

Question 11

What part of the cardiac conduction system is located in the posterior wall of the right atrium,adjacent to the entrance of the superior vena cava?

Accepted Answer

A)  AV bundle
B)  Bundle branches
C)  Purkinje fibers
D)  AV node
E)  SA nodeF) All of the above
G) A) and D)

Question 12

In an EKG,the P wave is generated when the

Accepted Answer

A)  ventricles depolarize.
B)  atria depolarize.
C)  atria repolarize.
D)  ventricles repolarize.
E)  SA node initiates an impulse.F) A) and B)
G) A) and E)

Question 13

In an aging heart,increased flexibility of the heart valves may lead to a heart murmur.

Accepted Answer

A) True 
 B)False  False

Question 14

The left and right coronary arteries travel within the

Accepted Answer

A)  anterior interventricular sulcus.
B)  posterior interventricular sulcus.
C)  coronary sulcus.
D)  interventricular septum.
E)  interatrial septum.F) D) and E)
G) A) and B)

Question 15

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 16

Most coronary blood flow occurs during ventricular ________________.

Accepted Answer

The answer of Most coronary blood flow occurs during ventricular...

Question 17

Normal passage of blood from the atria to the ventricles only happens if the atrioventricular valves are open.

Accepted Answer

A) True 
 B)False

Question 18

During early ventricular diastole the semilunar valves ________________.

Accepted Answer

The answer of During early ventricular diastole the semilunar valves...

Question 19

Which bears a close structural relationship with the fossa ovalis?

Accepted Answer

A)  Papillary muscles
B)  Trabeculae carneae
C)  Conus arteriosus
D)  Chordae tendineae
E)  Foramen ovaleF) B) and E)
G) A) and B)

Question 20

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 C)

Exam 22: Heart

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

Which action causes the closure of the right atrioventricular valve?

Correct AnswerverifiedShow Answer

The left atrium and left ventricle are part of which circuit of the cardiovascular system?

Correct AnswerverifiedShow Answer

The trabeculae carneae in the left ventricle are ____________ in the right ventricle.

Correct AnswerverifiedShow Answer

The inferior chambers of the heart are the

Correct AnswerverifiedShow Answer

About seventy percent of the ventricle filling is achieved passively without the contraction of the atria.

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 AnswerverifiedFalse

The anterior part of each atrium is a flaplike extension called a(n)_______________.

Correct AnswerverifiedShow Answer

Which structure marks the end of the left ventricle and the entrance to the aorta?

Correct AnswerverifiedShow Answer

-In this figure showing an anterior view of the heart,the left atrium is noted by number _____.

Correct AnswerverifiedD

What part of the cardiac conduction system is located in the posterior wall of the right atrium,adjacent to the entrance of the superior vena cava?

Correct AnswerverifiedShow Answer

In an EKG,the P wave is generated when the

Correct AnswerverifiedShow Answer

In an aging heart,increased flexibility of the heart valves may lead to a heart murmur.

Correct AnswerverifiedFalse

The left and right coronary arteries travel within the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Most coronary blood flow occurs during ventricular ________________.

Correct AnswerverifiedShow Answer

Normal passage of blood from the atria to the ventricles only happens if the atrioventricular valves are open.

Correct AnswerverifiedShow Answer

During early ventricular diastole the semilunar valves ________________.

Correct AnswerverifiedShow Answer

Which bears a close structural relationship with the fossa ovalis?

Correct AnswerverifiedShow Answer

The epicardium is another name for the

Correct AnswerverifiedShow Answer

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False

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D

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False

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