Question 1

The electrical event that begins each heartbeat occurs at the sinoatrial (SA) node.

Accepted Answer

A) True 
 B)False

Question 2

The region between the right and left pleural cavities is the

Accepted Answer

A)   pulmonary cavity.
B)   peritoneal cavity.
C)   pericardial cavity.
D)   vertebral cavity.
E)   mediastinum.F) None of the above
G) B) and C)

Question 3

Describe the function of the cardiac skeleton of the heart.

Accepted Answer

The cardiac skeleton of the heart anchor...

Question 4

Oxygen-rich blood returning from the lungs enters the left atrium through two right and two left pulmonary veins.

Accepted Answer

A) True 
 B)False

Question 5

The foramen ovale in the fetal heart gives rise to the

Accepted Answer

A)   openings between the atria and ventricles.
B)   openings between the ventricles.
C)   fossa ovalis.
D)   aortic semilunar valve.E) B) and C)
F) All of the above

Question 6

Inflammation of the heart's myocardium is called ________.

Accepted Answer

The answer of Inflammation of the heart's myocardium is called...

Question 7

Valve responsible for preventing backflow of blood from the lungs into the heart.

Accepted Answer

A)   tricuspid
B)   bicuspid
C)   aortic semilunar
D)   pulmonary semilunar
E)   pectinateF) All of the above
G) A) and B)

Question 8

The technique called ________ uses a balloon catheter to expand stenotic coronary arteries.

Accepted Answer

The answer of The technique called ________ uses a balloon...

Question 9

The right and left coronary arteries arise from the descending aorta.

Accepted Answer

A) True 
 B)False

Question 10

Which structure develops from the embryological chamber called the bulbus cordis?

Accepted Answer

A)   the left atrium
B)   the right ventricle
C)   the left ventricle
D)   the sinoatrial nodeE) A) and D)
F) None of the above

Question 11

Which of the following statements about fetal heart development is false?

Accepted Answer

A)   The four heart chambers first develop during the third trimester.
B)   The heart begins as a pair of tubes in the midline of the thorax.
C)   The heart develops from mesodermal mesenchyme.
D)   The two atria are connected by a foramen ovale until birth.E) C) and D)
F) A) and D)

Question 12

The auricles are

Accepted Answer

A)   earlike flaps on the surface of the ventricles.
B)   earlike flaps on the surface of the atria.
C)   projections of the endothelium into the ventricles.
D)   modifications of the pectinate muscles on the inner surface of the atria.E) None of the above
F) All of the above

Question 13

Use the diagram above to answer the following questions.
-Identify the letter that indicates the left atrioventricular valve.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and E)
G) C) and E)

Question 14

The congenital heart defect in which the pulmonary trunk is narrowed, the right ventricle is hypertrophied, the interventricular septum is incomplete, and the aorta is connected to both ventricles is called ________.

Accepted Answer

Tetralogy ...

Question 15

The small cardiac vein lies on the

Accepted Answer

A)   right ventricle.
B)   left ventricle.
C)   right atrium.
D)   left atrium.E) A) and C)
F) A) and D)

Question 16

At which corner point of the heart does one listen for the sound of the closing aortic semilunar valve?

Accepted Answer

A)   superior right
B)   inferior right
C)   superior left
D)   inferior leftE) A) and C)
F) All of the above

Question 17

Cells of the subendocardial conducting network

Accepted Answer

A)   are larger and have fewer myofilaments than other cardiac cells.
B)   are nonconducting cells that electrically insulate the bundle branches of the interventricular septum.
C)   are pacemaker cells located in the SA node that initiate each heartbeat.
D)   are sensory cells that monitor the stretch of the myocardium to prevent overexpansion by high blood pressure.E) A) and C)
F) B) and C)

Question 18

A heart valve that fails to close properly is considered to be ________ or to exhibit insufficiency.

Accepted Answer

The answer of A heart valve that fails to close...

Question 19

Describe how the arrangement of cardiac muscle bundles "squeezes" the blood from the heart.

Accepted Answer

The muscle bundles of the atria are circ...

Question 20

Use the diagram above to answer the following questions.
-Identify the letter that indicates the left common carotid artery.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) D) and E)
G) A) and B)

Exam 19: The Heart

Inflammation of the heart's myocardium is called ________.

Correct AnswerverifiedShow Answer

The small cardiac vein lies on the

Correct AnswerverifiedShow Answer

The electrical event that begins each heartbeat occurs at the sinoatrial (SA) node.

Correct AnswerverifiedShow Answer

The technique called ________ uses a balloon catheter to expand stenotic coronary arteries.

Correct AnswerverifiedShow Answer

The foramen ovale in the fetal heart gives rise to the

Correct AnswerverifiedShow Answer

Cells of the subendocardial conducting network

Correct AnswerverifiedShow Answer

Which structure develops from the embryological chamber called the bulbus cordis?

Correct AnswerverifiedShow Answer

The congenital heart defect in which the pulmonary trunk is narrowed, the right ventricle is hypertrophied, the interventricular septum is incomplete, and the aorta is connected to both ventricles is called ________.

Correct AnswerverifiedTetralogy ...View AnswerShow Answer

Use the diagram above to answer the following questions. -Identify the letter that indicates the left common carotid artery.

Correct AnswerverifiedShow Answer

Oxygen-rich blood returning from the lungs enters the left atrium through two right and two left pulmonary veins.

Correct AnswerverifiedShow Answer

Describe how the arrangement of cardiac muscle bundles "squeezes" the blood from the heart.

Correct AnswerverifiedThe muscle bundles of the atria are circ...View AnswerShow Answer

Which of the following statements about fetal heart development is false?

Correct AnswerverifiedShow Answer

Valve responsible for preventing backflow of blood from the lungs into the heart.

Correct AnswerverifiedShow Answer

Describe the function of the cardiac skeleton of the heart.

Correct AnswerverifiedThe cardiac skeleton of the heart anchor...View AnswerShow Answer

At which corner point of the heart does one listen for the sound of the closing aortic semilunar valve?

Correct AnswerverifiedShow Answer

A heart valve that fails to close properly is considered to be ________ or to exhibit insufficiency.

Correct AnswerverifiedShow Answer

The auricles are

Correct AnswerverifiedShow Answer

The region between the right and left pleural cavities is the

Correct AnswerverifiedShow Answer

The right and left coronary arteries arise from the descending aorta.

Correct AnswerverifiedShow Answer

Use the diagram above to answer the following questions. -Identify the letter that indicates the left atrioventricular valve.

Correct AnswerverifiedShow Answer

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Tetralogy ...
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The muscle bundles of the atria are circ...
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The cardiac skeleton of the heart anchor...
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