Question 1

The normal pacemaker of the heart is the

Accepted Answer

A)   Purkinje fibers.
B)   AV bundle.
C)   sinoatrial node.
D)   atrioventricular node.E) B) and D)
F) C) and D)

Question 2

The inner lining of the heart is the

Accepted Answer

A)   epicardium.
B)   myocardium.
C)   endocardium.
D)   pericardium.E) A) and D)
F) B) and C)

Question 3

The blood pressure in the large systemic arteries is greatest during

Accepted Answer

A)   atrial systole.
B)   ventricular systole.
C)   ventricular diastole.
D)   atrial diastole.E) All of the above
F) None of the above

Question 4

Central venous pressure is the pressure in the inferior vena cava at the central point of the abdomen.

Accepted Answer

A) True 
 B)False

Question 5

When venous pressure is too low, ____________ stimulate smooth muscles in the walls of veins to contract.

Accepted Answer

A)   parasympathetic reflexes
B)   sympathetic reflexes
C)   somatic reflexes
D)   carbon dioxide levelsE) All of the above
F) None of the above

Question 6

The smaller branches of the coronary arteries have some anastomoses between vessels.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following layers of the heart and their functions are correctly matched?

Accepted Answer

A)   Epicardium-protective inner lining of the heart chambers and valves
B)   Myocardium-cardiac muscle tissue that pumps blood out of the heart chambers
C)   Endocardium-protective outer covering
D)   Pericardium-protective inner lining of the heart chambers and valvesE) B) and D)
F) All of the above

Question 8

The pain of angina pectoris comes from a blockage in an artery that supplies the

Accepted Answer

A)   left arm and shoulder.
B)   neck and jaw.
C)   heart.
D)   sternum.E) A) and C)
F) B) and D)

Question 9

Lipid-soluble substances diffuse through channels in cell membranes of cells forming the capillary wall, whereas lipid-insoluble substances diffuse through most areas of the capillary cell membranes.

Accepted Answer

A) True 
 B)False

Question 10

In mitral valve prolapse, the mitral valve

Accepted Answer

A)   is missing as a result of abnormal development.
B)   has an extra cusp.
C)   bulges into the left atrium during ventricular relaxation.
D)   bulges into the left atrium during ventricular contraction.E) None of the above
F) C) and D)

Question 11

Tim runs 5 to 8 miles a day. He has an enlarged heart and low heart rate and blood pressure. He most likely has

Accepted Answer

A)   coronary artery disease.
B)   an arrhythmia.
C)   a very healthy cardiovascular system.
D)   atherosclerosis.E) A) and C)
F) A) and D)

Question 12

In the arterial disease atherosclerosis,

Accepted Answer

A)   plaque accumulates on the interior walls of arteries.
B)   blood flow through affected arteries slows.
C)   risk of a thrombus or embolus forming increases.
D)   all of the above may happen.E) B) and C)
F) B) and D)

Question 13

The right atrium receives blood directly from

Accepted Answer

A)   the superior vena cava and inferior vena cava only.
B)   the superior vena cava, inferior vena cava, and coronary sinus.
C)   the superior vena cava, inferior vena cava, and pulmonary veins.
D)   the pulmonary veins.E) A) and D)
F) All of the above

Question 14

The SA node relays nerve impulses into the AV bundle of the interventricular septum, and the AV node is responsible for the rhythmic contractions of the heart.

Accepted Answer

A) True 
 B)False

Question 15

Blood flow to the right side of the heart muscle decreases due to constriction of the _____, and decreased blood flow to the heart tissue can result in _____.

Accepted Answer

A)   left coronary artery; mitral valve prolapse
B)   right pulmonary artery; endocarditis
C)   right coronary artery; ischemia
D)   left coronary vein; myocardial infarctionE) C) and D)
F) A) and B)

Question 16

Which type of blood vessel holds the greatest volume of blood?

Accepted Answer

A)   Artery
B)   Arteriole
C)   Capillary
D)   VeinE) A) and C)
F) A) and B)

Question 17

Which of the following is most life threatening?

Accepted Answer

A)   Atrial flutter
B)   Ventricular flutter
C)   Atrial fibrillation
D)   Ventricular fibrillationE) A) and D)
F) None of the above

Question 18

Osmotic pressure forces molecules in the blood out through capillary walls.

Accepted Answer

A) True 
 B)False

Question 19

Heart rate in a fetus is about ____, in a newborn about _____, and in an adult about ___.

Accepted Answer

A)   145; 140; 70
B)   70; 140; 145
C)   100; 100; 100
D)   200; 160; 120E) A) and B)
F) A) and C)

Question 20

Which artery is incorrectly matched to its location?

Accepted Answer

A)   Inferior mesenteric artery; colon and rectum
B)   Thyrocervical arteries; thymus.
C)   Celiac arteries; liver, spleen, and upper gastrointestinal tract
D)   Popliteal; behind the kneeE) A) and D)
F) C) and D)

Exam 15: Cardiovascular System

The inner lining of the heart is the

Correct AnswerverifiedShow Answer

Which of the following layers of the heart and their functions are correctly matched?

Correct AnswerverifiedShow Answer

The SA node relays nerve impulses into the AV bundle of the interventricular septum, and the AV node is responsible for the rhythmic contractions of the heart.

Correct AnswerverifiedShow Answer

Lipid-soluble substances diffuse through channels in cell membranes of cells forming the capillary wall, whereas lipid-insoluble substances diffuse through most areas of the capillary cell membranes.

Correct AnswerverifiedShow Answer

The pain of angina pectoris comes from a blockage in an artery that supplies the

Correct AnswerverifiedShow Answer

Which artery is incorrectly matched to its location?

Correct AnswerverifiedShow Answer

Which type of blood vessel holds the greatest volume of blood?

Correct AnswerverifiedShow Answer

Blood flow to the right side of the heart muscle decreases due to constriction of the _____, and decreased blood flow to the heart tissue can result in _____.

Correct AnswerverifiedShow Answer

The smaller branches of the coronary arteries have some anastomoses between vessels.

Correct AnswerverifiedShow Answer

Central venous pressure is the pressure in the inferior vena cava at the central point of the abdomen.

Correct AnswerverifiedShow Answer

Which of the following is most life threatening?

Correct AnswerverifiedShow Answer

In the arterial disease atherosclerosis,

Correct AnswerverifiedShow Answer

When venous pressure is too low, ____________ stimulate smooth muscles in the walls of veins to contract.

Correct AnswerverifiedShow Answer

In mitral valve prolapse, the mitral valve

Correct AnswerverifiedShow Answer

The right atrium receives blood directly from

Correct AnswerverifiedShow Answer

The normal pacemaker of the heart is the

Correct AnswerverifiedShow Answer

The blood pressure in the large systemic arteries is greatest during

Correct AnswerverifiedShow Answer

Tim runs 5 to 8 miles a day. He has an enlarged heart and low heart rate and blood pressure. He most likely has

Correct AnswerverifiedShow Answer

Heart rate in a fetus is about ____, in a newborn about _____, and in an adult about ___.

Correct AnswerverifiedShow Answer

Osmotic pressure forces molecules in the blood out through capillary walls.

Correct AnswerverifiedShow Answer

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Blood flow to the right side of the heart muscle decreases due to constriction of the _, and decreased blood flow to the heart tissue can result in _.

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Heart rate in a fetus is about __, in a newborn about _, and in an adult about _.

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