Question 1

What is the term given to amount of blood in ventricle at beginning of contraction?

Accepted Answer

end diasto...

Question 2

The cardiac center for regulating heart rate is located in the

Accepted Answer

A)   diencephalon
B)   midbrain
C)   pons
D)   medulla oblongata
E)   hypothalamus

Question 3

What is the term for the vessel that branches to form the circumflex artery?

Accepted Answer

left coron...

Question 4

Most cardiac veins drain into the

Accepted Answer

A)   right atrium
B)   left atrium
C)   coronary sinus
D)   inferior vena cava
E)   superior vena cava

Question 5

The two heart chambers that contain oxygenated blood are the

Accepted Answer

A)   right atrium and left atrium
B)   right atrium and right ventricle
C)   left atrium and left ventricle
D)   right ventricle and left ventricle

Question 6

The base of the heart is more superior than the apex.

Accepted Answer

A) True 
 B)False

Question 7

Which of these layers is most internal?

Accepted Answer

A)   fibrous pericardium
B)   serous fluid layer
C)   visceral pericardium
D)   parietal pericardium

Question 8

Baroreceptors and chemoreceptors send signals to the cardiac center in the pons which initiates sympathetic impulses to increase heart rate.

Accepted Answer

A) True 
 B)False

Question 9

The greatest deflection from the baseline on an electrocardiogram is caused by the

Accepted Answer

A)   depolarization of the atria
B)   repolarization of the atria
C)   depolarization of the ventricles
D)   repolarization of the ventricles

Question 10

The right ventricle makes up most of the apex of the heart.

Accepted Answer

A) True 
 B)False

Question 11

What is the term for the portion of the cardiac cycle that lasts about 0.3 seconds in normal resting cycle?

Accepted Answer

The answer of What is the term for the portion...

Question 12

An operation that attempts to repair the fossa ovalis is performed

Accepted Answer

A)   on the interventricular septum
B)   on the trabeculae carneae
C)   on the interatrial septum
D)   in the region between the right and left ventricles

Question 13

The first heart sound is heard just after the QRS on an electrocardiogram.The heart sound is caused by

Accepted Answer

A)   blood filling the cups of the semilunar valves
B)   turbulence in the blood from AV valves closing
C)   turbulence in the blood from semilunar valves closing
D)   chordae tendineae pulling AV valve cusps into correct position

Question 14

When ventricular pressure just exceeds atrial pressure,the

Accepted Answer

A)   atrioventricular valves open
B)   SA node discharges
C)   semilunar valves close
D)   atrioventricular valves close
E)   semilunar valves open

Question 15

The chamber of the heart that normally has the thickest myocardium is the

Accepted Answer

A)   right atrium
B)   left atrium
C)   right ventricle
D)   left ventricle

Question 16

What is the term for the region of an ECG that represents ventricular depolarization?

Accepted Answer

The answer of What is the term for the region...

Question 17

What is the term for the chamber of the heart with the thickest wall?

Accepted Answer

The answer of What is the term for the chamber...

Question 18

Impulses that initiate heart contraction are spontaneously generated in the

Accepted Answer

A)   atrioventricular node
B)   right bundle branch
C)   atrioventricular bundle
D)   sinoatrial node
E)   conducting myofiber

Question 19

Oxygenated blood enters the left atrium through the

Accepted Answer

A)   inferior vena cava
B)   pulmonary arteries
C)   ascending aorta
D)   pulmonary veins
E)   superior vena cava

Question 20

Heart sounds are caused by

Accepted Answer

A)   semilunar valves
B)   chordae tendineae
C)   turbulence in the blood
D)   contraction of the myocardium

Exam 11: Cardiovascular System: The Heart

Which of these layers is most internal?

Correct AnswerverifiedShow Answer

The chamber of the heart that normally has the thickest myocardium is the

Correct AnswerverifiedShow Answer

When ventricular pressure just exceeds atrial pressure,the

Correct AnswerverifiedShow Answer

The first heart sound is heard just after the QRS on an electrocardiogram.The heart sound is caused by

Correct AnswerverifiedShow Answer

An operation that attempts to repair the fossa ovalis is performed

Correct AnswerverifiedShow Answer

Oxygenated blood enters the left atrium through the

Correct AnswerverifiedShow Answer

What is the term given to amount of blood in ventricle at beginning of contraction?

Correct Answerverifiedend diasto...View AnswerShow Answer

Baroreceptors and chemoreceptors send signals to the cardiac center in the pons which initiates sympathetic impulses to increase heart rate.

Correct AnswerverifiedShow Answer

What is the term for the region of an ECG that represents ventricular depolarization?

Correct AnswerverifiedShow Answer

The two heart chambers that contain oxygenated blood are the

Correct AnswerverifiedShow Answer

What is the term for the portion of the cardiac cycle that lasts about 0.3 seconds in normal resting cycle?

Correct AnswerverifiedShow Answer

The base of the heart is more superior than the apex.

Correct AnswerverifiedShow Answer

The cardiac center for regulating heart rate is located in the

Correct AnswerverifiedShow Answer

What is the term for the chamber of the heart with the thickest wall?

Correct AnswerverifiedShow Answer

The right ventricle makes up most of the apex of the heart.

Correct AnswerverifiedShow Answer

Heart sounds are caused by

Correct AnswerverifiedShow Answer

The greatest deflection from the baseline on an electrocardiogram is caused by the

Correct AnswerverifiedShow Answer

What is the term for the vessel that branches to form the circumflex artery?

Correct Answerverifiedleft coron...View AnswerShow Answer

Impulses that initiate heart contraction are spontaneously generated in the

Correct AnswerverifiedShow Answer

Most cardiac veins drain into the

Correct AnswerverifiedShow Answer

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end diasto...
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left coron...
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