Question 1

-Identify structure "D" on the heart diagram.

Accepted Answer

A)   left atrium
B)   aortic semilunar valve
C)   bicuspid (mitral)  valve
D)   right atrium
E)   pulmonary semilunar valveF) A) and D)
G) C) and D)

Question 2

Match the drug with its effects.
-anticoagulant

Accepted Answer

A)  binds to epinephrine receptors
B)  prevents clot formation
C)  can reduce calcium diffusion rate into myocardial cells
D)  frequently given to people with restricted coronary blood flow in order to reduce preload
E)  used to treat high blood pressureF) All of the above
G) A) and B)

Question 3

Match the condition with the description.
-coronary thrombosis

Accepted Answer

A)  allows blood to flow from the aorta to the pulmonary trunk
B)  a blood clot in a coronary vessel
C)  indicates low oxygen levels in peripheral blood vessels
D)  no rhythmic contractions of the myocardium
E)  heart rate less than 60 beats/minuteF) A) and C)
G) A) and B)

Question 4

-The figure illustrates the cardiac action potential. What does "A" represent?

Accepted Answer

A)   early repolarization phase
B)   plateau phase
C)   final repolarization phase
D)   depolarization phaseE) B) and D)
F) B) and C)

Question 5

Of the types of damage resulting from a myocardial infarction, which is most likely to cause the greatest increase in the Q-T interval?

Accepted Answer

A)   infarction in the AV node
B)   left bundle branch block
C)   infarction affecting the SA node
D)   tachycardia
E)   ectopic focusF) B) and D)
G) B) and C)

Question 6

Blood flow through the coronary blood vessels decreases during myocardial contraction and increases during myocardial relaxation.

Accepted Answer

A) True 
 B)False

Question 7

Use the following key to mark the most correct answer.
-(1)  length of the refractory period in skeletal muscle cells;
(2)  length of the refractory period in cardiac muscle cells
B

Accepted Answer

A)  Choose A if the first item is greater than the second item.
B)  Choose B if the first item is less than the second item.
C)  Choose C if the first item is equal or nearly equal to the second item.D) All of the above
E) A) and B)

Question 8

A serious condition in which a large amount of fluid accumulates in the pericardial cavity and puts pressure of the heart is

Accepted Answer

A)   endocarditis.
B)   pericarditis.
C)   a myocardial infarction.
D)   cardiac tamponade.E) All of the above
F) A) and B)

Question 9

The delivery of oxygen and nutrients to the tissues of the body is accomplished through ________ circulation.

Accepted Answer

A)   hepatic
B)   pulmonary
C)   peripheral
D)   systemicE) All of the above
F) A) and B)

Question 10

Match the condition with the description.
-cyanosis

Accepted Answer

A)  allows blood to flow from the aorta to the pulmonary trunk
B)  a blood clot in a coronary vessel
C)  indicates low oxygen levels in peripheral blood vessels
D)  no rhythmic contractions of the myocardium
E)  heart rate less than 60 beats/minuteF) B) and C)
G) C) and E)

Question 11

Cardiac output is equal to heart rate times ____ _______.

Accepted Answer

The answer of Cardiac output is equal to heart rate...

Question 12

Regurgitation of blood flow through the aortic semilunar valve would give rise to

Accepted Answer

A)   the first heart sound.
B)   the second heart sound.
C)   a heart murmur.
D)   an extra heart beat.
E)   end-systolic volume.F) A) and E)
G) C) and D)

Question 13

-This chamber pumps blood to the systemic circuit.

Accepted Answer

The answer of 
-This chamber pumps blood to the systemic...

Question 14

Use the following key to mark the most correct answer.
-(1)  end-diastolic volume at rest;
(2)  end-diastolic volume during exercise
B

Accepted Answer

A)  Choose A if the first item is greater than the second item.
B)  Choose B if the first item is less than the second item.
C)  Choose C if the first item is equal or nearly equal to the second item.D) A) and C)
E) None of the above

Question 15

-Blood exiting the pulmonary semilunar valve is leaving this chamber of the heart.

Accepted Answer

The answer of 
-Blood exiting the pulmonary semilunar valve is...

Question 16

Match the drug with its effects.
-antihypertensive agent

Accepted Answer

A)  binds to epinephrine receptors
B)  prevents clot formation
C)  can reduce calcium diffusion rate into myocardial cells
D)  frequently given to people with restricted coronary blood flow in order to reduce preload
E)  used to treat high blood pressureF) A) and D)
G) All of the above

Question 17

Which of the following would result from a reduced function of the sodium channels in the SA node?

Accepted Answer

A)   depolarization would be delayed
B)   the heart rate would decrease
C)   repolarization would not occur
D)   a shortened plateau phase
E)   depolarization would be delayed and the heart rate would decreaseF) A) and D)
G) B) and E)

Question 18

A direct connection between arteries is called a/an

Accepted Answer

A)   auricle.
B)   sulcus.
C)   sinus.
D)   anastamosis.E) B) and C)
F) C) and D)

Question 19

Use the following two choices:
- ↑\uparrow↑  blood pressure

Accepted Answer

A)  ↑ heart rate
B)  ↓ heart rate C) A) and B)
D) undefined

Question 20

Which of the following pairs is mismatched?

Accepted Answer

A)   endocardium - covers the inner surfaces of the heart
B)   myocardium - cardiac muscle
C)   trabeculae carneae - interior walls of ventricles
D)   pectinate muscles - muscles that close valves
E)   chordae tendineae - connective tissue strings that connect to cusps of valvesF) C) and E)
G) A) and E)

Exam 20: Cardiovascular System: the Heart

Of the types of damage resulting from a myocardial infarction, which is most likely to cause the greatest increase in the Q-T interval?

Correct AnswerverifiedShow Answer

Blood flow through the coronary blood vessels decreases during myocardial contraction and increases during myocardial relaxation.

Correct AnswerverifiedShow Answer

-This chamber pumps blood to the systemic circuit.

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Match the drug with its effects. -anticoagulant

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Which of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

-Blood exiting the pulmonary semilunar valve is leaving this chamber of the heart.

Correct AnswerverifiedShow Answer

Which of the following would result from a reduced function of the sodium channels in the SA node?

Correct AnswerverifiedShow Answer

Use the following key to mark the most correct answer. -(1) length of the refractory period in skeletal muscle cells; (2) length of the refractory period in cardiac muscle cells B

Correct AnswerverifiedShow Answer

The delivery of oxygen and nutrients to the tissues of the body is accomplished through ________ circulation.

Correct AnswerverifiedShow Answer

Cardiac output is equal to heart rate times ____ _______.

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Use the following two choices: - ↑\uparrow↑ blood pressure

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Match the condition with the description. -coronary thrombosis

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Match the condition with the description. -cyanosis

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Use the following key to mark the most correct answer. -(1) end-diastolic volume at rest; (2) end-diastolic volume during exercise B

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-Identify structure "D" on the heart diagram.

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A direct connection between arteries is called a/an

Correct AnswerverifiedShow Answer

Regurgitation of blood flow through the aortic semilunar valve would give rise to

Correct AnswerverifiedShow Answer

Match the drug with its effects. -antihypertensive agent

Correct AnswerverifiedShow Answer

-The figure illustrates the cardiac action potential. What does "A" represent?

Correct AnswerverifiedShow Answer

A serious condition in which a large amount of fluid accumulates in the pericardial cavity and puts pressure of the heart is

Correct AnswerverifiedShow Answer

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Cardiac output is equal to heart rate times ___.

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Use the following two choices: - $\uparrow$ blood pressure

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